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how do you find the surface area of a rectangular prism formula. Surface Area Of A Rectangular Box Formula For a cube or rectangular box the formula becomes even easier. Start with a right rectangular prism as shown below and call the length l the width w and the height h.
To find the surface area of the entire prism you just find the surface area of the top the bottom and each wall - then you add them all together. Take the length of any edge a. A triangular prism is just a box with triangles for the top and bottom.
In order to make a rectangular prism like the one shown above you basically use the following rectangular prism template.
A 6a2 A 6 a 2. Area of a right triangle. To derive the formula of the surface area of a rectangular prism follow closely the steps below. Start a free trial on VividMath.