-Centroids of Solids of Revolution 1. Determine the centroid of the solid bounded by the first quadrant bounded by the parabola y = 4 - x2 if it was revolved about the x-axis. Determine the centroid of the solid bounded by the first quadrant bounded by the parabola y = 4 x2 if it was revolved about the v-axis. CUE?) CUE?) ll