SOLUTION: if the diameter of a circle is 18, how can i find the lenghth of an arc that measures 100

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Question 142449: if the diameter of a circle is 18, how can i find the lenghth of an arc that measures 100
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
C=2PIR
C=2*3.14*18/2
C=6.28*9
C=56.52 IS THE LENGTH OF THE CIRCUMFERANCE.
AN ANGLE OF 100 IS 100/360 0R .278 OR 27.8% OF THE CIRCUMFERANCE.
56.52*.278=15.71 IS THE LENGTH OF THE 100 DEGREE ARC.