SOLUTION: The length of a rectangle is twice its width. Find its length if the perimeter is 84 feet.

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: The length of a rectangle is twice its width. Find its length if the perimeter is 84 feet.      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 178183: The length of a rectangle is twice its width. Find its length if the perimeter is 84 feet.
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
P=2L+2W.....we are given P=84 and L=2W....lets plug em in
:
84=2(2W)+2W
:
84=4W+2W
:
84=6W
:
W=14
:
highlight%28L=2%2814%29=28%29feet