Question

The length of a rectangle is 5 cm less than three times its width. If the perimeter of the rectangle is 54 cm, find the LENGTH of the rectangle. *

Answer 1

Hi there!

Your answer is

The length is 19

Explanation:

L=3w-5

P=54

Perimeter formula

L+L+W+W=P

(3w-5)+(3w-5) +w+w = 54

8w-10=54

+10

8w=64

/8

w=8

Plug in width in Length formula

L=3w-5

L= 3(8)-5

L=19