document.write( "Question 312397: What is the exact area of a circle with a diameter of 15 inches\r
\n" ); document.write( "\n" ); document.write( "I think it would be \"15pi\" square inches?
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Algebra.Com's Answer #223303 by OmniMaestra(21)\"\" \"About 
You can put this solution on YOUR website!
Start with the formula for area of a circle:\r
\n" ); document.write( "\n" ); document.write( "\"A+=+pi%2Ar%5E2\"\r
\n" ); document.write( "\n" ); document.write( "Since d = 15, the radius = 7.5\r
\n" ); document.write( "\n" ); document.write( "Substitute 7.5 in place of r in the formula:\r
\n" ); document.write( "\n" ); document.write( "\"A+=+pi%2A7.5%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"Area+=+56.25pi\"\"in%5E2\"\r
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