3392/CH15/EX15.4/Ex15_4.sce


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clc
// initialization of variables
clear
S_u=1300 //MPa
K_C=69 // MPa sqrt(m)
SF=2.2
//calculations
S_c=S_u/2.2
a=1/%pi*(K_C/S_c)^2
printf('a = %.2f mm',a*10^3)