How do I find the radius of a circle from its circumference?

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Answer 1 · 2018-05-11T13:01:13

#r = C/(2pi)#

The Circumference of a circle goes with this formula;

#C = 2pir#

Where';

#C = "Circumference"#

#pi = 22/7 or 3.142#

#r = "radius"#

Hence you can find the radius of the circle from the circumference..

#C = 2pir#

Divide both sides by #2pi#

#C/(2pi) = (2pir)/(2pi)#

#C/(2pi) = (cancel(2pi)r)/cancel(2pi)#

#C/(2pi)= r#

#r = C/(2pi)#