SOLUTION: the length of a rectangle is three times the width, and the perimeter of the rectangle is 56 inches. what are the length and width of the rectangle? (note: P=2l+2w)

SOLUTION: the length of a rectangle is three times the width, and the perimeter of the rectangle is 56 inches. what are the length and width of the rectangle? (note: P=2l+2w)

Algebra.Com

Question 956923: the length of a rectangle is three times the width, and the perimeter of the rectangle is 56 inches. what are the length and width of the rectangle? (note: P=2l+2w)
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
L=3W
56=2(3W)+2W
56=6W+2W
56=8W
W=56/8
W=7 ANS.
L=3*7=21 ANS.
PROOF:
56=2*21+2*7
56=42+14
56=56
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