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The circumference of a circle with a radius of 3 m is: 18.85 m.
A circle with a radius of 3 inches has a circumference of 18.8 inches
The circumference of a circle when the radius is 3 inches is: 18.8 inches (r x 2 x Pi = circumference)
the formula for the circumference of a circle is pi*diameter. the diameter is 2*radius so if 1.5 is the radius, 3 is the diameter plug 3 into the formula... circumference=3.14*3 circumference=9.42
Circumference of a circle = 2*pi*radius or pi*diameter