36. The area moment of inertia of a rectangle about the axis passing through its centroid is . The moment of inertia about an axis x that is parallel to is given by , where A is the area of the rectangle, and is the distance between the two axes.

Write a MATLAB user-defined function that determines the area moment of inertia of a Ibeam about the axis that passes through its centroid

(see drawing). For the function name and arguments use Ixc=IxcBeam(w,h,d,t), where the input arguments w, h,

d, and t are the dimensions shown in the figure and the output argument Ixc is . For finding the coordinate of the centroid, use the user-defined function centroidI from the previous problem as a subfunction inside IxcBeam.

(The moment of inertia of a composite area is obtained by dividing the area into parts and adding the moments of inertia of the parts.)

Use the function to determine the moment of inertia for a beam with in., in., in., and in.