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clear
//Given
//Entire area - hollow area
l_e = 60.0 //mm - length of the entire area
b_e = 40 //mm - width of the entire area
l_h = 30 //mm - length of the hollow area
b_h = 20 //mm - width of the hollow area
A_e = l_e*b_e //sq.mm - The entire area
A_h = -l_h*b_h //sq.mm - The hollow area
A_re = A_e + A_h //sq.mm resultant area
y_e = l_e/2 // mm com from bottom
y_h = 20+l_h/2 //mm com from bottom
y_com = (A_e*y_e + A_h*y_h)/A_re
//moment of inertia caliculatins - bh3/12 +ad2
I_e = b_e*(l_e**3)/12 + A_e*((y_e-y_com)**2) //Parallel axis theorem
I_h = b_h*(l_h**3)/12 - A_h*((y_h-y_com)**2) //Parallel axis theorem
I_total = I_e - I_h
printf("\n The moment of inertia of total system is %e mm^4",I_total)
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