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Water is running into an inverted cone at the rate of `270dm^(3)//min`. The radius of the cone is equal to the depth of water in it .When the water is 18 dm deep, water level is rising at the rate of

A

`(5)/(6pi)dm//min`.

B

`(30)/(pi) dm//min`.

C

`(6)/(5pi) dm//min`.

D

`(1)/(30pi) dm//min`.

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A
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MARVEL PUBLICATION-APLICATIONS OF DERIVATIVES-MULTIPLE CHOICE QUESTIONS (TEST YOUR GRASP - II : CHAPTER 12)
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