SOLUTION: A RECTANGULAR PICTURE FRAME IS TWICE AS LONG AS IT IS WIDE. IF THE AREA OF THE FRAME IS 228 SQUARE INCHES , FIND ITS DIMENSIONS

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Question 962609: A RECTANGULAR PICTURE FRAME IS TWICE AS LONG AS IT IS WIDE. IF THE AREA OF THE FRAME IS 228 SQUARE INCHES , FIND ITS DIMENSIONS
Answer by hkwu(60) About Me  (Show Source):
You can put this solution on YOUR website!
Let
L = length
W = width
then
L=2W
so
A=L%2AW
228=%282W%29%2AW
228=2W%5E2
114=W%5E2
sqrt%28114%29=W
We don't care about the negative root because the width is positive. Thus
L=2sqrt%28114%29
The dimensions are approximately length 21.3542in by width 10.6771in.
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