SOLUTION: How do you find the area of a rectangle having only the width and the diagonal?

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Question 300350: How do you find the area of a rectangle having only the width and the diagonal?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The width (W), length (L), and diagonal (D) form a right triangle which follows the Pythagorean theorem.
W%5E2%2BL%5E2=D%5E2
L%5E2=D%5E2-W%5E2
L=sqrt%28D%5E2-W%5E2%29
From that, then the area of a rectangle is
A=L%2AW
highlight_green%28A=W%2Asqrt%28D%5E2-W%5E2%29%29