Question 847103
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Hi,
<img src='http://img40.imageshack.us/img40/3000/circleq.png' border='0'/></a>
{{{C = 44cm = 2pi*r}}}, {{{r = 44cm/2pi = 22cm/pi}}} 
 {{{r = 22cm/3.14}}} if You wish to use {{{pi = 3.14}}}