document.write( "Question 260034: A circle that has a surface area of 225......what is the circumference? \n" ); document.write( "
Algebra.Com's Answer #191473 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
A=pi*r^2=225
\n" ); document.write( "r^2=225/pi
\n" ); document.write( "r=sqrt(225/pi)
\n" ); document.write( "2*pi*r=C
\n" ); document.write( "2*pi*sqrt(225/pi)
\n" ); document.write( "2*pi*15*sqrt(1/pi)
\n" ); document.write( "30*sqrt(pi^2/pi)
\n" ); document.write( "30*sqrt(pi)
\n" ); document.write( "
\n" );