A conical vesel of height 10 mts and rad...

A conical vesel of height 10 mts and radius 5 units.is being filled water at uniform rate of 3/2 cu.mts/min. The rate at which the level of water rises when the depth of water in the vessle is 4mts is

`3pi` mts/min

`(3)/(4pi)` mts /min

`(3)/(8pi)` mts/min

`(7)/(2pi)` mts/min

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