SOLUTION: The length of a rectangle is three inches greater than twice its width. Its area is 90 square inches. Find its dimensions.

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Question 586572: The length of a rectangle is three inches greater than twice its width. Its area is 90 square inches. Find its dimensions.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the width. Then is the length. The area is the length times the width.

So:



Distribute, add -90 to both sides, then solve the factorable quadratic. Since you are looking for a length measurement, discard the negative root.

Once you have a value for , calculate

John

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