Question

Jalisa needs to purchase a cover for her oval-shaped pool. The pool's length and width measurements, as marked by dotted lines, are 30 feet and 13 feet.If Jalisa wants the pool cover to extend one foot from the pool's edge, as shown in the drawing, what will be the area of therectangular pool cover?A. 390 square feetOB. 434 square feetOC 480 square feetD. 86 square feet

Answer 1

She wants to cover the pool with a rectangular pool cover that extends one foot from the pool edges in every direction.

The length of the pool is 30ft and the width is 13ft, if the pool cover must extend 1ft over the pool's edge, then you have to add 2ft to the length and 2ft to the width, as shown below:

So, the length of the pool cover will be equal to the length of the pool plus two feet:

`length=30ft+2ft=32ft`

And the width of the pool cover will be equal to the width of the pool plus two feet:

`width=13ft+2ft=15ft`

Once you determined the width and length of the rectangular pool cover, you can calculate its area:

`\begin{gathered} A=wl \\ A=15*32 \\ A=480ft^2 \end{gathered}`

The area of the rectangular pool cover is 480 square feet (option C)