A conical tank, 12 ft high and width 8 ft. width across the top, is filled with water up to a level of 9 ft. from the bottom. Find the work done in pumping up all the water to a level of 8 ft. from the surface of the tank. O 715.5WTT O 704WTT O 357.75WTT O 189WT Question 16 5 pts The mass of the disk is given by m = So 2wrap (x) dac , where p (a) is an integrable function representing the radial density of a disk of radius r. If p (a) = 3x + 2, represents the radial density of the disk, calculate the mass of the disk of radius, r = 2. O 24T O 127 O 30T O 36TT