Posted by asheem on Monday, May 7, 2012 at 1:52pm.
(If you insist to use π as 22/7 ...
Using π as 22/7 ended in the early 70's when calculators became popular. I don't know of any texbook that still uses that approximation)
2r = 11/6
r = 11/12
C = 2(22/7)(11/12) = 484/84 = 121/21 or appr 5.76
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