Question

The circumference of a circle is 60pi cm what is the length of an of an arc 140 degrees

Answer 1

`\displaystyle\\ C_(circle) = 60\pi ~cm\\ m(arc) = 140^o\\ \\ L_(arc) = (60\pi * 140)/(360) =(\pi * 140)/(6) =\boxed{(70\pi)/(3)~cm}`