Question

A pizza box is 20 inches wide, 18 inches long, and 2 inches tall.

How many square inches of cardboard were used to create the box?

Answer 1

872 square in.

Explanation:

The formula for the surface area of a rectangular prism is:

`A=2(wl*wh*lh)`

Where w is the width of the prism, l s the length of the prism, h is the height of the prism, and A is the surface area.

Plugging in the numbers given, you get the following equation:

`A=2((20*18)*(20*2)*(18*2))`

Which when calculated out, is 872 square in.