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//Determine centroid
//refer fig. 9.14
//This figure is divided into three simple figures
A1=3*4/2 //m^2
A2=6*4 //m^2
A3=%pi*(1/2)*2^2 //m^2
A=A1+A2+A3 //m^2
//Co-ordinates of centroid
x1=6+3/3 //m
ya=4/3 //m
x2=3 //m
y2=2 //m
R=2
x3=(-4*R)/(3*%pi) //m
y3=2 //m
xbar=(A1*x1+A2*x2+A3*x3)/(A) //m
ybar=(A1*ya+A2*y2+A3*y3)/(A) //m
printf("\nxbar=%.3f m\nybar=%.3f m",xbar,ybar)
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