Question

Carmen plants to paint the inside of her swimming pool before she fills it.

Answer 1

`SA=700\text{ square ft}`

Explanation:

The surface area of a rectangular prism is represented by the following equation:

`\begin{gathered} SA=2lw+2wh+2lh \\ where, \\ l=\text{ length} \\ w=\text{ width} \\ h=\text{ height} \end{gathered}`

Therefore, for the given rectangular prism:

`\begin{gathered} SA=2(20)(10)+2(10)(5)+2(20)(5) \\ SA=400+100+200 \\ SA=700\text{ square ft} \end{gathered}`