SOLUTION: the width of a rectangular playground is 18 meters less than the length. find the width when the perimeter of the rectangle is 84
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Question 314927: the width of a rectangular playground is 18 meters less than the length. find the width when the perimeter of the rectangle is 84 Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! W=L-18
P=2L+2W
84=2L+2(L-18)
84=2L+2L-36
84+36=4L
4L=120
L=120/4
L=30 ANS.
W=30-18=12 ANS.
PROOF:
84=2*30+2*12
84=60+24
84=84
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