Water is running into an underground right circular conical reservoir, which is 10 m deep and radius of its base is 5 m. If the rate of change in the volume of water in the reservoir is then the rate (in m/min) at which water rises in it, when the water level is 4 m, is :
As we learnt in
Rate Measurement -
Rate of any of variable with respect to time is rate of measurement. Means according to small change in time how much other factors change is rate measurement:
- wherein
Where dR / dt means Rate of change of radius.
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