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clear
//
//Given
//Variable declaration
sigma=125*10**6 //Safe stress in N/sq.m
P=2.1*10**6 //Axial load in N
D=0.30 //External diameter in m
//Calculation
d=(sqrt((D**2)-P*4/(%pi*sigma)))*1e2 //internal diameter in cm
//Result
printf("\n internal diameter = %0.3f cm",d)
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