Find the circumference of a circle whose radius is 6.3m (pi=22/7)

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2 answers

C = 2πr
C = 2πr
= 2π(6.3)
= appr 39.584 , correct to 3 decimals

π ≠ 22/7, they stopped using this approximation in the 60's of the last century
using this old approximation
C = 39.6