Question

You have a rectangular backyard that is 90 feet wide. It has an area of 10,800 square feet. You are putting a fence along one length of the yard.Use the formula for the area of a rectangle A = l * w, where I is the length, and w is the width. Find the length of your backyard.

Answer 1

120 feet

Explanation:

We hve the following:

A = 10800 ft²

w = 90 ft

The area of a rectangle is the product between the length and the width, we do not know the length but we do know the area, therefore, we calculate the length as follows:

`\begin{gathered} A=w\cdot l \\ \\ \text{ We replacing} \\ \\ 10800=90\cdot l \\ \\ l=(10800)/(90) \\ \\ l=120\text{ ft} \end{gathered}`

The length of your backyard is equal to 120 feet