document.write( "Question 681327: Find the surface area of a sphere if the circumference measures $\"12%2Api\"$
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Algebra.Com's Answer #422613 by MathMan88(14) $\"\"$ $\"About$

You can put this solution on YOUR website!
First find the diameter
\n" ); document.write( " $\"c=d%2Api\"$
\n" ); document.write( " $\"12%2Api=d%2Api\"$
\n" ); document.write( " $\"d=12%7D%7D%0D%0AThen+solve+for+radius%0D%0A%7B%7B%7Br=d%2F2\"$
\n" ); document.write( " $\"r=12%2F2\"$
\n" ); document.write( " $\"r=6\"$
\n" ); document.write( "Then plug in d into surface area equation
\n" ); document.write( " $\"SA=+4%2Api%2A%28r%29%5E2\"$
\n" ); document.write( " $\"SA=+4%2Api%2A%286%29%5E2\"$
\n" ); document.write( " $\"SA=+4%2Api%2A36\"$
\n" ); document.write( " $\"SA=+144%2Api\"$ \r
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