if the diemeter is 9 cm the circumference is...?

I need an answer in 20 min!!!!!!!!!! With full pie in answer and formula!!!!!!!!!!!!!!!!!!!!!!!!!!
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5 Answers

9 times 3.14 = 28.26

2pie times r squared
by Level 6 User (18.9k points)
28.26 is the answer
by Level 6 User (18.9k points)
the circumference is 28.26
by Level 6 User (18.9k points)
Circumference=2*pi*r

                     =22/7*9

                     =28.28571 unit
by Level 3 User (2.2k points)
reshown by
28.285
by Level 4 User (7.9k points)

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