Three fire hoses are connected to a fire hydrant. each hose has a radius of 0.025 m. water enters the hydrant through an underground pipe of radius 0.075 m. in this pipe the water has a speed of 3.1 m/s. (a) how many kilograms of water are poured onto a fire in one hour by all three hoses? kg (b) find the water speed in each hose. m/s