1. The base of a solid is the region bounded by the parabolas y = x2 and y = 2 x2. Find the volume of the solid if the cross sections perpendicular to the x-axis are equilateral triangles. 2. Find the volume of the solid 5 if the base of S is the triangular region with vertices (0,0), (3,0), and (0,2) and cross sections perpendicular to the y-axis are semi-circles. 3. A log 10 m long is cut at 1-metre intervals and its cross-sectional areas (at a distance x from the end of the log) are given in the table. Use the Midpoint Rule with n = 5 to estimate the volume of the log. -I-I-Im III-II...\