SOLUTION: Find the radius of a circle if the length of a 60 degrees arc is 18π.

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Question 1189391: Find the radius of a circle if the length of a 60 degrees arc is 18π.
Answer by ikleyn(52756) About Me  (Show Source):
You can put this solution on YOUR website!
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Hence, the full circumference is 6 times 18pi, i.e. 108pi.


Then the radius is  %28108pi%29%2F%282pi%29 = 54 units.    ANSWER

Solved.