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2014-11-20T06:44:25+05:30

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Let   pie  = 3.14

   22/7  = 3.1428   nealy
      % error =  0.0028/3.14 * 100  =  0.09%
  
   355/113 = 3.1416  nearly
        =>  % error  = 0.0016/3.14  * 100 = 0.05%


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to be very precise the formula for %error is modulus of ( exact value - approximate value)/ exact value * 100 = 3.141592654- 3.142857143/3.141592654* 100=0.040% this is the answer of sears and zeamansky( university physics)
hope you agree with this?????????