C = pi * 2 * r
30 = 3.14159 * 2 * r
30 = 6.28318 * r
r = 30/6.28318
r = 4.77465233 cm
Chat with our AI personalities
60cm
If a circle circumference is 30 the radius is: 4.77
The radius of a circle with a circumference of 59 is: 9.39
The circumference of a circle with a 2pi radius is: 39.58
The radius of a circle, if the circumference is 188.5, is 30.