SOLUTION: The length of a rectangle is twice its width. If the perimeter of the rectangle is 30ft, find its area

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Question 177185: The length of a rectangle is twice its width. If the perimeter of the rectangle is 30ft, find its area
Answer by stanbon(57282) About Me  (Show Source):
You can put this solution on YOUR website!
The length of a rectangle is twice its width. If the perimeter of the rectangle is 30ft, find its area
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Perimeter = 2(L+W) = 30
L + W= 15
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But L = 2W, so substitute to get:
2W + W = 15
3W = 15
W = 5
L = 2W = 10
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Area = LW = 10*5 = 50 sq. ft.
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Cheers,
Stan H.