# The length of a rectangle is three times the width. What is the width of the area is 147 square feet?

May 30, 2018

The width is 7 feet

#### Explanation:

If the length of AD = n, then the length of AB = 3n.

Remember that the area of a rectangle is
width * length = $n \cdot 3 n = 3 {n}^{2}$

We are told that the area, i.e. $3 {n}^{2} = 147$
$\implies {n}^{2} = 49$
$\implies n = 7$