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clear
//Each angle is divided into two rectangles
//variable declaration
A1=600.0*15.0 //Area of 1,mm^2
A2=140.0*10.0 //Area of 2,mm^2
A3=150.0*10.0
A4=400.0*20.0
A=A1+A2*2+A3*2+A4 //Total area,mm^2
//The distance of the centroidal axis from the bottom fibres of section
Y1=320.0
Y2=100.0
Y3=25.0
Y4=10.0
yc=(A1*Y1+2*A2*Y2+A3*Y3*2+A4*Y4)/A
printf("\n yc")
//Now, Moment of inertia about the centroidalaxis=Sum of the moment of inertia of the individual rectangles
Ixx=(15.0*(600**3)/12.0)+(A1*((yc-320)**2))+((10.0*(140**3.0)/12.0)+(A2*((yc-100.0)**2)))*2+((150*(10**3)/12.0)+(A3*((yc-15.0)**2)))*2+(400.0*(20.0**3.0)/12.0)+(A4*((yc-10.0)**2))
printf("\n Ixx= %0.1f mm^4",Ixx)
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