Water leaks from a vertical cylindrical tank through a small hole in its base at a rate proportional to the square root of the volume of water...

Water leaks from a vertical cylindrical tank through a small hole in its base at a rate proportional to the square root of the volume of water remaining. The tank initially contains 100 liters and 21 liters leak out during the first day.When will the tank be half empty? How much water will remain in the tank after 5 days?