document.write( "Question 439009: What is the exact area of a circle with a diameter of 13 inches? \n" ); document.write( "
Algebra.Com's Answer #303472 by rwm(914)\"\" \"About 
You can put this solution on YOUR website!
pi *r^2 is the area of a circle.
\n" ); document.write( "Since the problem wants exact we leave pi there.
\n" ); document.write( "A=pi *(13/2)^2
\n" ); document.write( "A=pi*(169/4)
\n" ); document.write( "A=pi*42.25
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