SOLUTION: The length of a rectangle is twice its width. If the area of the rectangle is 72 ft, what is its perimeter?

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Question 627028: The length of a rectangle is twice its width.
If the area of the rectangle is 72 ft, what is its perimeter?

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


If a rectangle with perimeter has a length that is units longer (or shorter if ) than times the width, ,

Then knowing that the Perimeter is given by:

,

make the substitution:



Then solve for







For your problem: , , and . Do the arithmetic.

John

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