SOLUTION: the perimeter of a rectangle is 120 cm. when the width is increased by 9 cm and the length decreased by 9 cm, the figure becomes a square. What are the dimensions?
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Question 974738: the perimeter of a rectangle is 120 cm. when the width is increased by 9 cm and the length decreased by 9 cm, the figure becomes a square. What are the dimensions?
I have been stuck on this question and I just can't get it :( I hope you do!
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Ally Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! the perimeter of a rectangle is 120 cm. when the width is increased by 9 cm and the length decreased by 9 cm, the figure becomes a square. What are the dimensions?
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2W + 2L = 120
W + L = 60
W + 9 = L - 9
L = W + 18
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W + L = 60
W + (W+18) = 60
W = 21
L = 39
