need help with word problems

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The length of a rectangle is six times its width.

if the are of the rectangle is 216 yd^2, find the perimeter 

Jun 21st, 2015

l = 6w

6w^2 = 216

w^2 = 216/6

w^2 = 36

w = 6

l = 36

perimeter = 2 (6+36) = 84 yd


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Jun 21st, 2015

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