Hi,







        r = 8

Wish You the Best in your Studies. 

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
 Note:  is typed out as "pi" and NOT "pie"





C = 2*pi*r ... Start with the circumference formula





16*pi = 2*pi*r ... plug in the given circumference





16*pi/(2*pi) = r





8 = r





r = 8





So the radius is 8 

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