10-46. Determine the distance y to the centroid for the beam's cross-sectional area; then determine the moment of inertia about the x' axis. 10-47. Determine the moment of inertia of the beam's cross-sectional area about the y axis. 25 mm 50 mm 100 mm 25 mm 100 mm C 25 mm x -75 -75 mm- --75 mm- 50 mm' 25 mm