SOLUTION: The length of a rectangle is four times its width. If the area of the rectangle is 324ft^2 , find its perimeter.

SOLUTION: The length of a rectangle is four times its width. If the area of the rectangle is 324ft^2 , find its perimeter.

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Question 613238: The length of a rectangle is four times its width.
If the area of the rectangle is 324ft^2 , find its perimeter.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
w * 4w = 324 ft^2

4w^2 = 324 ft^2 ___ w^2 = 81 ft^2 ___ w = 9 ft

l = 4w = 4(9) = 36 ft

perimeter = 36 + 36 + 9 + 9 = 90 ft
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