The rate at which fluid level inside vertical cylindrical tank of radius r drop if we pump fluid out at the rate of 3cm3l/min is

The rate at which fluid level inside vertical cylindrical tank of radius r drop if we pump fluid out at the rate of 3cm3l/min is

  1. A

    1πr2

  2. B

    3πr2

  3. C

    2πr2

  4. D

    4πr

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    Solution:

    V=πr2hdVdt=πr2dhdtdhdt=3πr2

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