SOLUTION: The length of a rectangle is twice the width of the rectangle. The length of a diagonal of the rectangle is 25cm. How do I find out the are of the rectangle?

SOLUTION: The length of a rectangle is twice the width of the rectangle. The length of a diagonal of the rectangle is 25cm. How do I find out the are of the rectangle?

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Question 290798: The length of a rectangle is twice the width of the rectangle. The length of a diagonal of the rectangle is 25cm. How do I find out the are of the rectangle?
Answer by Greenfinch(383) (Show Source): You can put this solution on YOUR website!
If the width is X, the length is 2X and the diagonal is sqrt ((X^2) + (2X)^2)
So sqrt(5X^2) = 25 or 5X^2 = 625
X^2 = 125
Area is X x 2X = 2X^2 = 250
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