SOLUTION: how do i solve this problem??
"if a circle has an area of 81 pi inches squared what is the circumference. leave your answer in terms of pi."
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Circles
-> SOLUTION: how do i solve this problem??
"if a circle has an area of 81 pi inches squared what is the circumference. leave your answer in terms of pi."
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Question 426383: how do i solve this problem??
"if a circle has an area of 81 pi inches squared what is the circumference. leave your answer in terms of pi." Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! pir^2= 81pi the area
r^2= 81pi/pi
r^2=81
r=9
2pir = circumference
2*8*pi = circumference
16pi = circumference
