The circumference of a circle if the radius is 12 equals about 75.4
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If the circumference of a circle is 12 cm the radius is: 1.91 cm
The circumference of a circle with a radius of 12 meters is: 75.4 meters (r x 2 x Pi = circumference).
Its circumference is: 75.4 inches.
Circumference of the circle if the radius is 12 inches is 2*pi*r = 24*pi = 75.398
A circle with a radius of 6 inches has a circumference of 37.7 inches.