Calculate the diameter needed to empty a conical tank with a known coefficient of discharge.
Find the area of the tank as the diameter changes with respect to height h.
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Assuming the tank has a diameter of 2.44 meters at the top and 1.22 meters at the bottom and has a coefficient of discharge of 0.6, find the diameter of an orifice that would empty the tank in six minutes if the full depth is 3.05 meters.