The length of a rectangle is five times its width.

Mathematics
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The length of a rectangle is five times its width. 
If the perimeter of the rectangle is 
 
 , find its area.
Feb 13th, 2015

l = 5w

p = 72cm

p= 2(l+w)

72 = 2(5w + w)

72 = 10w + 2w

72 = 12w

w = 6 cm

l = 5*6 = 30cm

Area = l * w = 30 * 6 = 180 cm



Feb 13th, 2015

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Feb 13th, 2015
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