# SOLUTION: 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 wo

Algebra ->  Algebra  -> Circles -> SOLUTION: 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 wo      Log On

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 Geometry: Circles and their properties Solvers Lessons Answers archive Quiz In Depth

 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 youAnswer by RAY100(1637)   (Show Source): You can put this solution on YOUR website!Very typical problem remember Cir=2(pi)R,,,,and Area = (pi) r^2 by finding r, the problem becomes easy given cir so lets start there c=2(pi)r=18(pi) or 2*r=18 r=9 Area = (pi) r^2=(pi) 9^2=81(pi)