Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.013 meter. Water enters the hydrant through an underground pipe of radius 0.090 meter. In this pipe the water has a speed of 3.0 meter per meter.
(a) Find how many kilograms of water are poured onto a fire in one hour by all three hoses?
(b) Evaluate the water speed in each hose.