A volume is described as follows: 1. the base is the region bounded by :2: = y2 + 14y 12 and :2: = y2 24y + 156; 2. every cross section perpendicular to the yaxjs is a semi-circle. Find the volume of this object. Answer exactly or round to the nearest whole number. volume = Find the volume of the solid formed by rotating the region enclosed by y = e" + 4, y = 0, x = 0, x= 0.7 about the x-axis