The length of a rectangle is three times its width.

If the area of the rectangle is 75 yd?, find its perimeter.

Length times width equals area of a rectangle

Length=3x

Width=x

(3x) (x) = 75

3x squared=75

x=5

Length=3 (5)

Length=15

Width=5

Perimeter=2 (length plus width)

Perimeter=2 (15+5)

=2 (20)

=40