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clear
//
//Given
//Variable declaration
stress=480 //ultimate stress in N/sq.mm
P=1.9*10**6 //Axial load in N
D=200 //External diameter in mm
f=4 //Factor of safety
//Calculation
sigma=stress/f //Working stress or Permissable stress in N/sq.mm
d=sqrt((D**2)-((P*4)/(%pi*sigma))) //internal diameter in mm
//Result
printf("\n internal diameter = %0.3f mm",d)
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