If a circle circumference is 30 the radius is: 4.77
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The radius of a circle, if the circumference is 188.5, is 30.
The circumference of a circle with radius 30 is equal to 2 times the radius times pi, or about 188.5.
188.4955592 feet
A circle with a radius (d/2) of 15 cm has a circumference of 94.2 cm
The radius of a circle with a circumference of 59 is: 9.39