document.write( "Question 16753: What is the circumference of a circle if the area of the circle is 64? My homework gives me 5 choices.
\n" ); document.write( "1) 8
\n" ); document.write( "2) 16
\n" ); document.write( "3) 8 divided by the square root of pie
\n" ); document.write( "4)16 times the square root of pie
\n" ); document.write( "5) 32 times pie\r
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Algebra.Com's Answer #8170 by venugopalramana(3286) $\"\"$ $\"About$

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area of the circle is 64...formula for area is pie * r^2 ,where as formula for circumference or perimeter is 2*pie*r..hence
\n" ); document.write( " area =pie*r^2=64
\n" ); document.write( "r^2=64/pie
\n" ); document.write( " r= $\"sqrt%2864%2Fpie%29\"$ =8/ $\"sqrt%28pie%29\"$
\n" ); document.write( "circumference=2*pie*r=2*pie*8/ $\"sqrt%28pie%29\"$ = 16* $\"sqrt%28pie%29\"$ ...hence
\n" ); document.write( "16 times the square root of pie is the answer.\r
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