Question

A rectangular prism and its dimensions are shown in the diagram.

What is the total surface area of the prism in square inches?

Answer 1

484 square inches

Explanation:

The total surface area is given by the formula ...

A = 2(LW +H(L +W))

A = 2((10 in)(8 in) +(9 in)(10 in +8 in)) = 2(80 in² +162 in²)

A = 484 in²

The total surface area is 484 square inches.