Question

A rectangular prism gift box has dimensions of 2.5 inches, 7 inches, and 9 inches.How much wrapping paper will it take to cover the gift box? Round answer to the nearest tenth if necessary.

Answer 1

The question requires us to calculate the surface area of the rectangular prism.

The formula to calculate the surface area is given to be:

`A=2\left(wl+hl+hw\right)`

where l is the length, w is the width, and h is the height.

From the question, the following dimensions are provided:

`\begin{gathered} l=2.5 \\ w=7 \\ h=9 \end{gathered}`

Therefore, we can calculate the surface area to be:

`\begin{gathered} A=2(7\cdot2.5+9\cdot2.5+9\cdot7) \\ A=206\text{ in}^2 \end{gathered}`

OPTION C is correct.