A water tank has the shape of an inverte...

A water tank has the shape of an inverted right circular cone, whose semi-vertical angle is `tan ^(-1)((1)/(2))`. Water is poured into it at a constant rate of 5 cu m/min. Then, the rate (in m/min) at which the level of water is rising at the instant when the depth of water in the tank is 10 m. Water is a natural resource. What is the importance of water in our daily life?

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