If circle is 12 mm across how much is the circumference ?

1 Answer
DanT
May 15, 2018

The circumference is 37.7 mm.

Explanation:

To find the circumference of a circle, use the formula #c=2pir# or #c=pid#. If the circle is 12 mm across, that's the diameter #d# which is 12 mm.

Use #c=pid#:
#c=pi*12mm#
#c=37.7mm#

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