What is the best estimate of the circumference of a circle with a diameter of 47 mm: a) 141mm b) 139mm c) 121mm d) 100mm

asked Sep 5, 2018 93.9k views

5 votes

by OriBS

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Using the formulasC=2π r
d=2r
Solving for C:
C=π
d=π·47≈147.65485mm

Shawn Mehan answered Sep 11, 2018

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