SOLUTION: please help solve this problem The length of a rectangle is twice its width. If the area of the rectangle is 162m2 , find its perimeter.

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Question 131082: please help solve this problem
The length of a rectangle is twice its width. If the area of the rectangle is 162m2 , find its perimeter.

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
L=2W
LW=162
2W*W=162
2W^2-162=0
2(W^1-81)=0
2(W-9)(W=9)=0
W-9=0
W=9 ANSWER FOR THE WIDTH.
L=2*9=18 ANSWER FOR THE LENGTH.
PERIMETER=2*9+2*18=18+36=54 ANSWER FOR THE PERIMETER.