![Surface Area = [(Length x Width) + (Length x Height) + (Width x Height)] x 2 Example: The surface area of a rectangular prism with length of 3 inches, width of 4 inches, and height of 5 inches: Surface Area = [(3 x 4) + (3 x 5) + (4 x 5)] x 2 Calculated out this gives a surface area of 94 Square Inches. . Cook with rachel](/img/512x512/1661058288622.webp)
Surface area of rectangular prism. Author: Irina Lyublinskaya. Topic: Area, Prism, Surface. GeoGebra Applet Press Enter to start activity. New Resources.Here is the basic idea to find surface area of the above rectangular prism. Surface Area = Sum of areas of all six faces. Let us find the area of each face separately. Area of the front face (red colored) = l x h. Area of the back face (blue colored) = l x h. Area of the left side face (green colored) = w x hSurface area of rectangular prism. Author: Irina Lyublinskaya. Topic: Area, Prism, Surface. GeoGebra Applet Press Enter to start activity. New Resources.Check out our rectangular prism calculator for more information. To understand the calculation of the lateral area of a trapezoidal prism, let's take the following trapezoidal prism as an example: Side a: 4 m; Side b: 7 m; Side c: 4 m; Side d: 3 m; ... Calculate the surface area of the trapezoidal prism. The last step is to compute the …The formula for the surface area of a triangular prism is SA = bh + (s1 + s2 + s3)H. In this formula, “b” is the triangle base, “h” is the triangle height, “s1,” “s2” and “s3” are ...A rectangular prism is a three-dimensional shape with six faces, all of which are rectangles. How is the surface area of a rectangular prism calculated? The surface area is calculated by adding the areas of all six faces. Can the formula be used for irregular shapes? No, the formula assumes a perfect rectangular prism. What are the units of the ...Jan 24, 2024 · The total surface area of a triangular prism is the sum of the areas of all its faces: the three lateral faces (rectangles) and two bases (triangles). The most general formula for the surface area of any prism is: Total area = Lateral area + 2 × Base area To find the surface area of a rectangular prism, measure the length, width, and height of the prism. Find the area of the top and …The total of all the lateral faces of a rectangular prism, i.e. the total area excluding the bases, can be used to compute the lateral surface area. The formula for calculating a rectangular prism’s surface area is as follows. Formula. We can calculate rectangular prism’s lateral surface area (LSA) using this equation:Surface Area of Rectangular Prisms · 1. Determine the length, width, and height of the prism. · 2. A rectangular prism has 6 rectangular faces. · 3. The surfac...Aug 3, 2023 ... The formula of the surface area of a rectangular prism is equal to the sum of the area of lateral faces and rectangular bases and it can be ...Find the surface area of a rectangular pyramid with a slant height of 10 yards, a base width (b) of 8 yards and a base length (h) of 12 yards. Figure 6.5.4. Solution ... (Problems 13 – 17) Find the surface area of each figure. Leave your answers in terms of PI, if the answer contains PI. Round all other answers to the nearest hundredth.Check out our well-developed and ready-to-print worksheets on surface area to practice finding the surface area of a rectangular prism. It is a solid shape with 6 rectangular faces. The length l, width w, and height h are expressed in whole numbers. Apply the formula SA = 2 (lw + lh+ wh), find the surface area, and represent the answer in ... The total surface area of a rectangular prism is the sum of the lateral surface area (LSA) and twice the base area of the rectangular prism. This means that – Total surface area …Jul 28, 2017 ... This geometry video tutorial explains how to find the volume of a rectangular prism as well as how to find the surface area of a rectangular ...Jan 18, 2024 · Learn how to calculate the volume, surface area, and diagonal of a rectangular prism using formulas and examples. Use the calculator to find the area of any rectangular prism in seconds. Oct 4, 2023 · Calculator online for a the surface area of a capsule, cone, conical frustum, cube, cylinder, hemisphere, square pyramid, rectangular prism, triangular prism, sphere, or spherical cap. Calculate the unknown defining side lengths, circumferences, volumes or radii of a various geometric shapes with any 2 known variables. Online calculators and formulas for a surface area and other geometry problems. Apr 26, 2020 ... In this video tutorial, I will be explaining: (1) What does the Surface Area of a Rectangular Prism mean? (2) What is the Surface Area of a ...The surface area of prism formula may be defined as 2 x area of base + (perimeter of base x height) Area of Prism Example. If we take the example of a rectangular prism, then the area of prism formula would read like: 2 x Length x Breadth + 2( Length + Breadth) x Height. Let us now understand the area of prism formula in this …Jan 18, 2024 ... The surface area of the cuboid consists of 6 faces - three pairs of parallel rectangles. To find the rectangular prism surface area, add the ...Learn how to calculate the surface area of a rectangular prism and a triangular prism using the formula for the sum of the areas of each face. See examples, common …The correct option is D 6 in. Let h be the height of the rectangle. Area of rectangular face A or C= Length×Width. = 5 in×h in= 5h sq in. Area of rectangular face B or D= Length×Width. = 3 in×h in= 3h sq in. Area of rectangular face E or F=Length×Width. = 3 in×5 in= 15 sq in. Surface area of rectangular prism = Area of rectangular face A ...Apr 17, 2020 ... This will help you in your Geometry class and in life.Learn how to find the surface area of a rectangular prism using a formula that involves the width, length and height of the prism. See how to apply the formula for …A rectangular prism is similar to a cuboid and its surface area is the sum of areas of all the faces of the rectangular prism. In a rectangular prism, we have two …To calculate the surface area of a rectangular prism, you need to determine the area of each face and then sum them up. The formula for finding the surface area of a rectangular prism is as follows: Surface Area = 2lw + 2lh + 2wh. In this formula, ‘l’ represents the length, ‘w’ represents the width, and ‘h’ represents the height of the rectangular prism.The base and top always have the same area. The pairs of opposite sides have the same area as well. The volume of Rectangular Prism: V = lwh; Surface Area of Rectangular Prism: S = 2(lw + lh + wh) In a right rectangular prism, edges = 12, faces = 6, vertices = 8; When all sides of a right rectangular prism are equal, it is called a cube. The figure presents a surface net of a rectangular prism. The net consists of 4 rectangles in a row, where the second rectangle from the left is also connected ...Have students open Surface Area and Volume applet to Compute mode and choose Rectangular Prism from the drop-down menu. Have students work in pairs to complete the Surface Area of a Rectangular Prism Record Sheet. Teacher should monitor the room for questions and make sure that students are on the correct website. Closure.Surface Area of Rectangular Prism Formula. The surface area of a rectangular prism can be found using the formula: surface area = 2(lw + wh + lh) where l is the length, w is the width, and h is the height of the prism. To find the surface area of a rectangular prism, you need to know the length, width, and height of the prism.One of the most important decisions when designing an outdoor entertainment area is the type of surface you plan to use. Expert Advice On Improving Your Home Videos Latest View All...The answer is the surface area for this rectangular prism is 208 square inches. Example 4. Find the surface area of a rectangular prism with a length of 5 ft, width of 4 ft, height of 2 ft. First, plug the values given above into the surface area formula and multiply the values together within each of the parentheses:This rectangular prism has a surface area of 938 square centimeters. If you’re not sure which measurements go with which side of the prism, try drawing a net. Let’s practice using this formula. Try a few problems on your own. Example A Length of 8 in, width of 4 inches, height of 6 inches Solution: 208 in2 Example B Length of 5 ft, width of 4 ft, height of 2 ft …In conclusion, the surface area of a rectangular prism is the total area of all its faces. To calculate the surface area, you need to know the length, width, ...Jan 10, 2024 · Rectangular Prism. Rectangular Prism in mathematics is a three-dimensional geometric figure with four lateral faces and two parallel faces. A polygon that has two parallel bases is called a prism. A rectangular prism is one whose two parallel bases are rectangular. A rectangular prism is somewhat similar to a cuboid. Rectangular Prism Surface area quiz for 6th grade students. Find other quizzes for Mathematics and more on Quizizz for free! 11 Qs . Three Dimensional Shapes 22.8K plays 3rd - 4th 10 Qs . Tens and Ones 3.7K plays KG - 2nd 12 Qs . Volume 16K plays 1st - 5th 10 Qs . Multiply Polynomials 711 plays 9th Browse from millions of quizzes. QUIZ . …Example: What is the surface area of a prism where the base area is 25 m 2, the base perimeter is 24 m, and the length is 12 m: Surface Area = 2 × Base Area + Base Perimeter × Length. = 2 × 25 m2 + 24 m × 12 m. = 50 m2 + 288 m2. Talk students in 6th grade into repeatedly practicing these surface area of a rectangular prism handouts involving integers less than or equal to 20, so they grasp the concept beyond doubt. Apply the formula SA = 2 (wl + hl + hw) and solve the word problems and exercises featuring rectangular prisms. Download the set.Watch this lecture series and complete the interactive exercises to practice calculating the surface area of rectangular prisms. Practice Surface area word problems - Questions. 1. A group of students made trees out of paper for a scene in a school play. The trees are shaped like hollow square pyramids. They created this net to represent the paper they …The surface area of a rectangular prism can be calculated by adding the areas of the six faces. The formula is: Surface Area = 2(Length x Width) + 2(Length x Height) + 2(Width x Height). As an example, if you had a rectangular prism with the measurements 10 cm x 5 cm x 4 cm, the surface area of that prism would be 2(10 cm x 5 cm) + 2(10 cm x 4 ... Jun 4, 2021 ... Using a Net to Find the Surface Area of a Rectangular Prism. Step 1: Identify the given side lengths of a rectangular prism. Step 2: Draw a net ...Cuboids, Rectangular Prisms and Cubes. Go to Surface Area or Volume.. A cuboid is a box-shaped object.. It has six flat faces and all angles are right angles.. And all of its faces are rectangles. It is also a prism because it has the same cross-section along a length. In fact it is a rectangular prism.. Examples of CuboidsActivity Ideas. 1. Make it hands on. In 7th grade, surface area is a brand new concept, so students will need time to understand what surface area is. Reusing amazon boxes, cereal boxes, or cracker boxes can be a great exercise to make the connection between 3D figures and their nets. PayPal laid off dozens of employees from its San Jose headquarters, filings show. As first reported by The Information and later confirmed by Techcrunch, the layoffs impacted 83 em...Total Surface Area(TSA) of the rectangular prism is the total space occupied by all the faces of the rectangular prism. It is given by the formula, TSA of …Rectangular Prism; Cross Section of Prism. The cross-section is the shape obtained by the intersection of an object by a plane along its axis. It is also said as cutting a three-dimensional object with a plane to obtain another shape. ... The surface area of the prism is the total area covered by the faces of the prism. For any kind of prism, the surface …To calculate the lateral surface area of a rectangular prism, you need to find the sum of the areas of all the rectangular faces excluding the top and bottom faces. Here’s the formula: \text{Lateral Surface Area} = 2 \times (length \times height + width \times height). What is the difference between a rectangular prism and a triangular prism?Example 3: Find the surface area of a rectangular prism as shown in the figure. Solution: The prism is in the shape of rectangular parallelopiped. So we can calculate the surface area of the prism using the surface area of a parallelepiped formula as, Surface area of prism = 2lw + 2lh + 2wh. Surface Area of a Rectangular Prism Calculator. A rectangular prism is a three-dimensional shape, having six faces, and all the faces of the prism are rectangles.The surface area of a rectangular prism is the total area or region covered by its six faces. Prisms are solids with flat parallelogram sides and identical polygon bases.. What is the …Have students open Surface Area and Volume applet to Compute mode and choose Rectangular Prism from the drop-down menu. Have students work in pairs to complete the Surface Area of a Rectangular Prism Record Sheet. Teacher should monitor the room for questions and make sure that students are on the correct website. Closure.The Lateral Surface Area is the sum of the faces of a rectangular prism except the top and base. Lateral surface area of rectangular prism = lh + wh + lh + wh. LSA =2lh + 2wh. LSA = 2h (l + w) The total surface area is the sum of all the faces of a rectangular prism. Total Surface Area of rectangular prism = 2lw + 2wh + 2hl. The correct option is D 6 in. Let h be the height of the rectangle. Area of rectangular face A or C= Length×Width. = 5 in×h in= 5h sq in. Area of rectangular face B or D= Length×Width. = 3 in×h in= 3h sq in. Area of rectangular face E or F=Length×Width. = 3 in×5 in= 15 sq in. Surface area of rectangular prism = Area of rectangular face A ...Check out our well-developed and ready-to-print worksheets on surface area to practice finding the surface area of a rectangular prism. It is a solid shape with 6 rectangular faces. The length l, width w, and height h are expressed in whole numbers. Apply the formula SA = 2 (lw + lh+ wh), find the surface area, and represent the answer in ...Surface area of rectangular prism. Author: Irina Lyublinskaya. Topic: Area, Prism, Surface. New Resources. Prediction Intervals, Confidence Intervals, and an Arising Ellipse; Volume of Cylinder ; Sequence of perpendicular segments; Unwrapping a Cylinder (surface area) Set position of sliders; Discover Resources. Investigating Symmetry; parallelogram …Rectangular Prism Surface Area Volume = lwh; Surface Area = 2(lw + lh + wh) Sphere Surface Area Volume = (4/3) π r 3; Surface Area = 4 π r 2; Spherical Cap …Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more.What is the surface area of a prism? The surface area of a prism is the total area of all of the faces of the prism. Prisms are 3D shapes made up of flat faces, including polygonal bases and rectangle faces. One type of prism is a rectangular prism. Surface area of a rectangular prism. You can also think of each side of a rectangular prism as a rectangle with a specific area, and the surface area of the prism is the sum of the area of all six sides. The area of each side of the rectangular prism is given in the table:What is the surface area of a rectangular prism example? Let’s say you have a rectangular prism with a length of 6 units, a width of 4 units, and a height of 5 units. The surface area would be: Surface Area = 2(6 × 4 + 4 × 5 + 5 × 6) = 94 square units. What is the formula for the total surface area of a rectangle?We can think of this as finding the surface area of a rectangular prism or the surface area of a box. Calculate the area of each face. Face: Area (cm 2) Front: 10 × 4 = 40: Back: 40: Bottom: 10 × 6 = 60: Top: 60: Left side: 6 × 4 = 24: Right side: 24: 2 Add the areas together.How to calculate the surface area of a prism · Work out the area of each rectangle separately, length × width. · Multiply the perimeter of the end face by the .....Surface area is the sum of all unit squares that fit on the exterior of a solid. As the diagram below indicates, there are six surfaces to a rectangular prism. There is a front, back, top, bottom, left, and right to every rectangular prism. The surface are of a prism is nothing more than the sum of all the areas of these rectangles.Rectangular prisms are solid three-dimensional figures that have 6 faces, 12 edges, and 8 vertices. Rectangular prisms are also called cuboids, so they share some important characteristics with cubes. For example, each face of these prisms meets four other faces at right angles. However, unlike cubes where the faces are square, the faces of …To find the surface area of the cube, add up the areas of all six faces. There are six square faces, each with a side length of 23 feet. Find the area of one of ...How to calculate the surface area of a prism · Work out the area of each rectangle separately, length × width. · Multiply the perimeter of the end face by the .....Make your job easier and see how to use a net to find the surface area of a prism. Keywords: calculate; surface; area; rectangular; prism; dimensions ...Maximum volume of rectangular prism with known surface area. 1. Calculus Question ( Surface area/Volume) 1. Finding dimensions of a rectangular box to optimize volume. 2. how to calculate surface area of rectangular prism with given volume. 0. Minimizing the surface area with a constant volume. 4. A problem of minimum. Hot …Surface Area of Rectangular Prism · Polyhedrons · Surface Area of Triangular Prism.The length of all the parallel edges here are equal. The base of the prism here is rectangular in shape. A common example you can see in real life is the shoe box, which has a rectangular shape. Volume of Rectangular Parallelepiped = Surface Area × Height. Here, the surface area is equal to the area of rectangle = Length × Width.Learn how to calculate the surface area of a rectangular prism using formulas for base area, lateral surface area and total surface area. See examples, FAQs and practice …Cuboids, Rectangular Prisms and Cubes. Go to Surface Area or Volume. A cuboid is a box-shaped object. It has six flat faces and all angles are right angles. And all of its faces are rectangles. It is also a prism because it has the same cross-section along a length. In fact it is a rectangular prism. The surface area of a prism is measured in terms of square units. The Surface Area of a Prism Formula is given as, Surface Area Of A Rectangular Prism is A = 2 (wl + lh + hw) Surface Area Of A Triangular Prism is A = bh + L (s1 + s2 + s3) Where, a – apothem length of the prism. b – base length of the prism. l – base width of the ...Rectangular Prism; Cross Section of Prism. The cross-section is the shape obtained by the intersection of an object by a plane along its axis. It is also said as cutting a three-dimensional object with a plane to obtain another shape. ... The surface area of the prism is the total area covered by the faces of the prism. For any kind of prism, the surface …The surface area of prism formula may be defined as 2 x area of base + (perimeter of base x height) Area of Prism Example. If we take the example of a rectangular prism, then the area of prism formula would read like: 2 x Length x Breadth + 2( Length + Breadth) x Height. Let us now understand the area of prism formula in this …Apr 17, 2020 ... This will help you in your Geometry class and in life.Jan 18, 2024 ... The surface area of the cuboid consists of 6 faces - three pairs of parallel rectangles. To find the rectangular prism surface area, add the ...Find the surface area of the rectangular prism with the following dimensions: length = 16 m height = 10 m width = 11 m Learn how to find the surface area of a rectangular prism using a formula and a calculator. Enter some numbers and get the …One of the most important decisions when designing an outdoor entertainment area is the type of surface you plan to use. Expert Advice On Improving Your Home Videos Latest View All...Activity Ideas. 1. Make it hands on. In 7th grade, surface area is a brand new concept, so students will need time to understand what surface area is. Reusing amazon boxes, cereal boxes, or cracker boxes can be a …The figure presents a surface net of a rectangular prism. The net consists of 4 rectangles in a row, where the second rectangle from the left is also connected to a rectangle above it and a rectangle below it. The bottom of the left most rectangle is labeled as 3 units. The bottom of the second rectangle from the left is labeled as 2 units. Example 4: Finding the Surface Area of a Cube Knowing the Perimeter of Its Base. If the perimeter of the base of a cube is 54.4 cm, find its total surface area. Answer . A cube is a particular rectangular prism with 6 congruent faces that are squares. Its surface area is then six times the area of one of its faces.Step 1: Write the given dimensions of the prism. Step 2: Substitute the given values in the formula S = (2 × Base Area) + (Base perimeter × height) where "S" is the surface area of the prism. Step 3: Now solve the equation for "Base Area by simplifying the equations". The surface area of a rectangular prism is the measure of how much-exposed area a prism has. Surface area is expressed in square units. The total surface area of a rectangular prism is the sum of the lateral surface area (LSA) and twice the base area of the rectangular prism. Total Surface Area of rectangular prism = LSA + 2 (Base area) [Square ... Learn how to find the surface area of a rectangular prism using a formula that involves the width, length and height of the prism. See how to apply the formula for …The surface area of a rectangular prism is the combined surface areas of all six of its sides. Because opposing sides are always the same size, the total surface can be determined ...Oct 4, 2023 · Calculator online for a the surface area of a capsule, cone, conical frustum, cube, cylinder, hemisphere, square pyramid, rectangular prism, triangular prism, sphere, or spherical cap. Calculate the unknown defining side lengths, circumferences, volumes or radii of a various geometric shapes with any 2 known variables. Online calculators and formulas for a surface area and other geometry problems. Surface Area of Rectangular Prism. Unraveling the surface area of a rectangular prism is another enthralling journey, achieved using the formula: Surface Area = 2(Length × Width + Length × Height + Width × Height) Discover the wonders of Math! The magical world of Mathematics is filled with enchanting shapes, mesmerizing numbers, …The surface area of a rectangular prism = 2(ab+ac+bc). Surface area of triangular prisms. A very common example of a triangular prism is the well-known ...
The formula for the surface area of a prism is \(SA=2B+ph\), where B, again, stands for the area of the base, p represents the perimeter of the base, and h stands for the height of the prism. Now that we know what the formulas are, let’s look at a few example problems using them. Examples. Find the volume and surface area of this …. Junkyard near me auto
A prism is a 3D solid object made up of two congruent bases which are polygons and congruent lateral faces which are rectangular in shape. There are two types of areas that a prism has - the lateral surface area and the total surface area. Jan 24, 2012 ... This tutorial shows how to use a short-cut to quickly find the surface area of a rectangular prism.Students should understand that the volume of an object is the measure of the space inside a 3D object. Recognising the base of a prism is critical when calculating its volume. The general rule for the volume of prisms is Volume = Area of the base × height. Students must know that the height of a prism will always be perpendicular to its base ...Surface area formula. The surface area of a rectangular prism is given by the formula: SA = 2lw + 2lh + 2wh. where SA is the surface area, l is the length, w is the width, and h is the height. How to calculate the surface area of a rectangular prism. Here's an example: Suppose we have a rectangular prism with the following dimensions: Length (l ... Calculator online for a the surface area of a capsule, cone, conical frustum, cube, cylinder, hemisphere, square pyramid, rectangular prism, triangular prism, sphere, or spherical cap. Calculate the unknown defining side lengths, circumferences, volumes or radii of a various geometric shapes with any 2 known variables. Online calculators and …The surface area of a rectangular prism can be calculated by adding the areas of the six faces. The formula is: Surface Area = 2(Length x Width) + 2(Length x Height) + 2(Width x Height). As an example, if you had a rectangular prism with the measurements 10 cm x 5 cm x 4 cm, the surface area of that prism would be 2(10 cm x 5 cm) + 2(10 cm x 4 ... Learn how to calculate the surface area of a rectangular prism using formulas for base area, lateral surface area and total surface area. See examples, FAQs and practice …Learn how to find the surface area of a rectangular prism using a formula that involves the width, length and height of the prism. See how to apply the formula for …Add up the areas of all the faces: The total surface area of the rectangular prism net is the sum of the areas of all six faces: 2(12 cm²) + 2(6 cm²) + 2(8 cm²) = 48 cm² + 12 cm² + 16 cm² = 76 cm². If your students need a visual explainer, I recommend this Khan Academy video on finding the surface area of a rectangular prism:Jan 24, 2024 · Step 1: Note the dimensions of the given rectangular prism. In the given example, the length and breadth of the rectangular prism’s base are 10 units and 6 units, respectively, and its height is 15 units. Step 2: We know that the surface area of a rectangular prism is equal to 2 (lb + bh + lh) square units. Dec 26, 2023 · We’ll just know the dimensions of the rectangular prism, like this: Here we can see our prism is 10 meters long by 5 meters wide by 4 meters high. The corresponding edges on the opposite sides will be the same since this is a rectangular prism. The find the surface area, I can use the surface area formula for rectangular prisms: Warm Up Find the area of these 2-dimensional figures: 6 cm 8 in 6 cm OBJECTIVE: SWBAT find the surface area of a rectangular prism Find the area of these ...Say goodbye to your gift-wrapping woes with our rectangular prism surface area calculator! Not just a savior during the holiday season, this tool is also a reliable companion for various real-world applications. But enough chit-chat, let’s dive into the nitty-gritty. Here’s the magical formula: Surface Area = 2lw + 2lh + 2wh Surface area formulas. Many common objects have well-defined formulas for finding their surface areas. Cube. The surface area, S, of a cube with edge, s, is: S = 6s 2. Rectangular prism. The surface area, S, of a rectangular prism is: S = 2lw + 2lh + 2wh. where l is the length, w is the width, and h is the height of the rectangular prism. Right ... Jan 18, 2024 · Learn how to find the surface area of a rectangular prism using a formula and a calculator. Enter some numbers and get the result in seconds. See examples, tips, and FAQs about this topic. We can think of this as finding the surface area of a rectangular prism or the surface area of a box. Calculate the area of each face. Face: Area (cm 2) Front: 10 × 4 = 40: Back: 40: Bottom: 10 × 6 = 60: Top: 60: Left side: 6 × 4 = 24: Right side: 24: 2 Add the areas together.Rectangular Prism; Cross Section of Prism. The cross-section is the shape obtained by the intersection of an object by a plane along its axis. It is also said as cutting a three-dimensional object with a plane to obtain another shape. ... The surface area of the prism is the total area covered by the faces of the prism. For any kind of prism, the surface …Using a variety of tools and strategies, develop the concept that surface area of a rectangular prism with rational-valued edge lengths can be found by wrapping the figure with samesized square units without gaps or overlap. Use appropriate measurements such as cm^2. OK.G.3D.1.1. Solve real-world and mathematical problems …Jun 15, 2022 · Example \(\PageIndex{4}\) Find the surface area of the prism below. Figure \(\PageIndex{11}\) Solution. This is a right triangular prism. To find the surface area, we need to find the length of the hypotenuse of the base because it is the width of one of the lateral faces. What is the surface area of a rectangular prism example? Let’s say you have a rectangular prism with a length of 6 units, a width of 4 units, and a height of 5 units. The surface area would be: Surface Area = 2(6 × 4 + 4 × 5 + 5 × 6) = 94 square units. What is the formula for the total surface area of a rectangle?.