question 18 to 19 type it out the answer.

Question 18 (2.6 points) The tank shown is full of water. Given that water weighs 62.5 lb/ft and R= 9, find the work required to pump the water out of the tank. hemisphere Select the correct answer. O 1) 321,061 ft-lb 2) 322,062 ft-lb 3) 322,082 ft-lb O 4) 321,952 ft-lb ( 5) 321,062 ft-lb Question 19 (2.6 points) Use the method of cylindrical shells to find the volume generated by rotating the region bounded by the given curves about the specified axis. y = x , y = 0, x = 1, x = 4; about x = 1