document.write( "Question 221435: A circle has an area of 113.097 sq ft calculate the diameter of the circle \r
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\n" ); document.write( "\n" ); document.write( "was just wondering what the formula is for doing this \n" ); document.write( "

Algebra.Com's Answer #166087 by Earlsdon(6294) $\"\"$ $\"About$

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For a circle, the area is given by:
\n" ); document.write( " $\"A+=+pi%2Ar%5E2\"$ or, if you have the diameter, substitute $\"r+=+d%2F2\"$
\n" ); document.write( " $\"A+=+pi%2A%28d%2F2%29%5E2\"$ So now, if you substitute $\"A+=+113.097\"$ and solve for d, you get:
\n" ); document.write( " $\"113.097+=+pi%28d%2F2%29%5E2\"$ Then square the parentheses.
\n" ); document.write( " $\"113.097+=+pi%2Ad%5E2%2F4\"$ Multiply both sides by 4.
\n" ); document.write( " $\"452.382+=+pi%2Ad%5E2\"$ Divide both sides by $\"pi\"$ .
\n" ); document.write( " $\"452.382%2Fpi+=+d%5E2\"$ Finally, take the square root of both sides.
\n" ); document.write( " $\"sqrt%28452.382%2Fpi%29+=+d\"$ Evaluate this and you'll have your answer! \n" ); document.write( "

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