From the figure shown below, calculate the following: a. total length of the circular arc segment and the straight lines b. location of the centroid with respect to the x-axis Y 0.5 m 0.8 m R=0.6 m 0.2 m By using a Cartesian plane, the area is bounded by the curve y2=4x, x-4-0, and x-axis. a. by revolving the area at x-4-0 it creates a solid of revolution, calculate then its centroidal distance in y-coordinate only b. using the area mentioned above, calculate the polar moment of inertia