Question

The question: A box of cereal is a right rectangular prism with a base with dimensions of 7 inches by 2 inches and a height of 10 inches. What is SA, the surface area, of the box of cereal?

Answer 1

Answer:208

Explanation:

Answer 2

To determine the surface area of a figure we need to find the area of each face and add them. For a rectangular prism we will have a total of six faces. The formula for the surface area is given as:

`SA=2lw+2lh+2wh`

where l is the length of the base, w is the width of the base and h is the height of the prism. In this case we have that:

• l=7 in

,

• w= 2 in

,

• h= 10 in

Plugging these values, we have:

`\begin{gathered} SA=2(7)(2)+2(7)(10)+2(2)(10) \\ SA=28+140+40 \\ SA=208 \end{gathered}`

Therefore, the surface area is 208 square inches.