SOLUTION: the length of a rectangle is twice its width. the perimeter is 90 cm what is the area of the rectangle

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Question 1106876: the length of a rectangle is twice its width. the perimeter is 90 cm what is the area of the rectangle
Answer by stanbon(75887) About Me  (Show Source):
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the length of a rectangle is twice its width. the perimeter is 90 cm what is the area of the rectangle
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Equations:
L = 2*W
2(L+W) = 90
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L = 2*W
L + W = 45
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Substitute for "L" and solve for "W"::
2W + W = 45
3W = 45
Width = 15 cm
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L = 2*W = 30 cm
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Cheers,
Stan H.
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