10. Surface Area
Sign In
How many surfaces does a rectangular prism have?
72 m^2
A rectangular prism has a total of six surfaces. The dimensions of these six surfaces can be thought of in pairs — two sides are the prism's length l and width w, another two sides are the prism's length l and height h, and the final pair are the prism's width w and height h.
To find the surface area of the prism, we need to add the area of all six of these sides together.
S=2l w+2l h+2wh
By substituting these values into the formula, we can determine the surface area of the rectangular prism.
Substitute values
Multiply
Add terms
The surface area is 72 m^2.