A rectangular water reservoir is 10. 8 m...

A rectangular water reservoir is `10. 8 mb y3. 75 m` at the base. Water flows into it at the rate of `18 mp e r` second through a pipe having the cross section `7. 5 c mx4. 5 c mdot` Find the height to which the water will rise in the reservoir in `30m inu t e sdot`

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