Pearson Geometry Common Core, 2011
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Pearson Geometry Common Core, 2011 View details
8. Perimeter, Circumference, and Area
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Exercise 13 Page 64

Use that C=2Ď€ r to find the circumference.

Ď€/2m

Practice makes perfect
The circumference of a circle can be found by multiplying twice the radius by π. C= 2 π r We know that this circle has a radius of 14 meters, so we can substitute 14 for r in the formula.
P=2Ď€ r
P=2*Ď€* 1/4
P=Ď€/2
The circumference is π2 meters.