A very large water tank, open at the top, has a small hole in the bottom. Assume that the area of the hole is much much smaller than the area of the top of the tank. When the water level is 40.8 m above the bottom of the tank, what is the speed of the water leaking from the hole? Express your answer in m/s, to at least one digit after the decimal point.

A very large water tank, open at the top, has a small hole in the bottom. Assume that the area of the hole is much much smaller than the area of the top of the tank. When the water level is 40.8 m above the bottom of the tank, what is the speed of the water leaking from the hole? Express your answer in m/s, to at least one digit after the decimal point.