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clear
//
//
//
//Variable declaration
E=70*10**9 //young's modulus(Pa)
gama=1 //surface energy(joule/m**2)
C=1*10**-6 //depth(m)
//Calculation
sigma_f=sqrt(2*E*gama/(%pi*C)) //fracture strength(GPa)
//Result
printf("\n fracture strength is %0.3f GPa",sigma_f/10**9)
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