Question: Concern the region bounded by the quarter circle x2 + y2 = 1, with x ≥ 0, y ≥ 0. Find the volume of the following solids.
1. The solid whose base is the region and whose crosssections perpendicular to the y-axis are semicircles.
2. The solid whose base is the region and whose crosssection perpendicular to the y-axis is an isosceles right triangle with one leg in the region.