Attempt $4$: $17$ attempts remaining.

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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 $350$ liters and $17$ liters leak out during the first day.

A$.$ When will the tank be half empty? $\backslash ($ t$=\backslash )$ days

B$.$ How much water will remain in the tank after $3$ days? volume $=$ Liters