SOLUTION: The length of a rectangle is three times the width. If the perimeter is 36 cm, find the width.

Algebra ->  Length-and-distance -> SOLUTION: The length of a rectangle is three times the width. If the perimeter is 36 cm, find the width.      Log On


   

Question 1050283: The length of a rectangle is three times the width. If the perimeter is 36
cm, find the width.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

     .

L = 3w, P = 36cm

2L + 2w = P

6w + 2w = 36cm

8w = 36cm

w = 4.5cm

L = 13.5cm

Checking

2L + 2w = P

27cm + 9cm = 36cm CHECKS!