Question

The perimeter of a rectangle is 42cm. The length is 9cm longer than the width what is the dimensions of the rectangle?

Answer 1

2l + 2w = 42

l + w = 21

9 + w + w = 21

9 + 2w = 21

2w = 12

w = 6, l = 15

The length of the rectangle is 15 cm, and the width of the rectangle is 6 cm.