Acylindrical water-storage tank has a height of 7.5 m and a radius of 6.2 m. the storage tank is full of water but is vented to the atmosphere. the bottom of the tank is 29 m off the ground. a 13 cm diameter pipe runs vertically down from the tank and goes 1.8 m underground before turning horizontal. the water flow in the horizontal pipe is 87 l/s.1 what is the water pressure (gauge) in the horizontal pipe underground? 2 how fast does the water level in the tank drop? 3 butch jones drills a 6.5 mm diameter hole near the bottom of the tank. how fast does the water shoot out? 4 what volume flow of water is lost out the hole?