7. 8. 9. Find the volume of the solid obtained by rotating the region between y = x and y = x about the y-axis. . /2 . /4 Find the volume of the solid obtained by rotating the region bounded by y = x - x and y = 0 about the line x = 2. . C. /3 B. /3 A. 51/7 B. /2 Find the length of the curve y= 3 B. 47/3 D. /5 C. 61/6 D. /4 +x+x+ 1 4x+4 D. 59/6 ) E. /6 E. /6 0 x 2. E. 53/6