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

A water tank has the shape of an inverted righ circular cone with its axis vertical and vertex lowermost . Its semi-vertical angle is `tan^(-1)(0.5)` . Water is poured into it at a constant rate of 4 cubic meter per hour . Find the rate at which the level of the water is rising at the instant when the depth of water in the tank is 2 m.

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The correct Answer is:
`(35)/(88)m//h.`
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MODERN PUBLICATION-APPLICATIONS OF DERIVATIVES-Revision Exercise
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