Question

The length of a rectangle is 4 times it’s width . It’s perimeter is 90 m . Find it’s dimensions .use p

Answer 1

w = 9

l = 36

Explanation:

P = 90

l = 4w

P=2(l+w)

90 = 2(4w+w)

90 = 10w

w = 9

90 = 2(l+9)

90 = 2l + 18

72 = 2l

l = 36