Question

The area of a rectangular fence is 500 square feet. If the width of the fence is 20 feet, then find its length.

Answer 1

Here the area and the width of the rectangular fence are given. We have to find length of the fence.

( diagram )

The area A of a rectangle is given by the formula $A=lw$ where $l$ is the length and $w$ is the width.

Given that area is $500$ square feet and width is $20$ feet.

Substituting values in formula,

$\Rightarrow 500=l\times 20$

$\Rightarrow \frac{500}{20}=\frac{1\times 20}{20}$ [ Dividing both sides by $20$ ]

$\Rightarrow l=25$ feet

$\therefore$ length of rectangular fence is $25$ feet.

Hence, the answer is $25.$