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rjr0112
the circumference would be 69 inches lol simple question
YouFoundKaty
1-Circumference is equal to the diameter times pi. The diameter is twice the radius. So r=9 then d=18. 18 times pi is 56.55 or 18pi. 

2-23pi 

3-16 times 2 is 32. so 32pi is your answer. 

1- C=20.5 the diameter would be C/pi so 20.5/pi = 6.53 so the radius would be 3.265. 

1-203.08 
2-1.97 (these are the same as the one above) 

1-it would be 69 inches

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