SOLUTION: the length of a rectangular pool is twice its width. if the perimeter of the pool is 81 meters, find its dimensions

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Question 730608: the length of a rectangular pool is twice its width. if the perimeter of the pool is 81 meters, find its dimensions
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
P=2L+2W
L=2W
81=2*2W+2W
81=4W+2W
81=6W
W=81/6
W=13.5 ANS. FOR THE WIDTH.
L=2*13.5
L=27 ANS. FOR THE LENGTH.
PROOF:
81=2*27+2*13.5
81=54+27
81=81