document.write( "Question 49272: 0=3x*3x-5x+11
\n" ); document.write( "x*x-6x+9=0
\n" ); document.write( "5+3*3-16+4
\n" ); document.write( "12+20/4-5\r
\n" ); document.write( "\n" ); document.write( "the area of a circle is 20(3.14) find the radius
\n" ); document.write( "the radius of a circle is 9. find circumference
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Algebra.Com's Answer #32699 by Nate(3500)\"\" \"About 
You can put this solution on YOUR website!
AREA = (pi)r^2
\n" ); document.write( "20(3.14) = (3.14)r^2
\n" ); document.write( "20 = r^2
\n" ); document.write( "sqrt(20) = r
\n" ); document.write( "~~~~
\n" ); document.write( "r = 9
\n" ); document.write( "Circumference = 2(3.14)*9 = 56.52
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