document.write( "Question 193050: what is the area of a circle with circumference of 18 pi centimeters? Give your answer in terms of pi. i think i should refer to theorem 11-7 and 11-8. i cannot show you what work i have done on this because my keyoard does not have a symbol for pi. thank you \n" ); document.write( "
Algebra.Com's Answer #144892 by RAY100(1637)\"\" \"About 
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Very typical problem
\n" ); document.write( "remember Cir=2(pi)R,,,,and Area = (pi) r^2
\n" ); document.write( "by finding r, the problem becomes easy
\n" ); document.write( "given cir so lets start there
\n" ); document.write( "c=2(pi)r=18(pi)
\n" ); document.write( "or 2*r=18
\n" ); document.write( "r=9\r
\n" ); document.write( "\n" ); document.write( "Area = (pi) r^2=(pi) 9^2=81(pi)
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