SOLUTION: find the length of arc C in terms of pie for if radius of the circle = 3cm

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Question 519269: find the length of arc C in terms of pie for if radius of the circle = 3cm
Answer by Edwin McCravy(8908) About Me  (Show Source):
You can put this solution on YOUR website!
 You forgot to give the measure of the central angle
of the arc C, so I arbitrarily selected 70°.  You can redo
it using the measure you were given that you forgot to give 
here.

 


Set up the proportion:

                 %27arc_length%27%2F%0D%0A%27central_angle%27 = circumference%2F%27360%B0%27 

Since circumference = 2piŚradius

                 %27arc_length%27%2F%0D%0A%27central_angle%27 = %282pi%2Aradius%29%2F%27360%B0%27


                 C%2F%0D%0A%2770%B0%27 = %282pi%2A3%29%2F%27360%B0%27

                 C%2F%0D%0A%2770%B0%27 = %282pi%2A3%29%2F%27360%B0%27

                 C%2F%0D%0A%2770%B0%27 = %282pi%2A3%29%2F%27360%B0%27

                 C%2F%0D%0A%2770%B0%27 = %286pi%29%2F%27360%B0%27

                 C%2F%0D%0A%2770%B0%27 = %28pi%29%2F%2760%B0%27


                 C = %28%2770%B0%27%2Api%29%2F%2760%B0%27

                 C = expr%287%2F6%29pi

Edwin