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A hemispherical tank full of water is emptied by a pipe at the rate of liters per second. How
how much time will it take to empty half the tank if its diameter is 3m? (Take ππ = )

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answer is A.

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Detailed Solution

Concept- The concept used in this question is Volume of 3D shape i.e., Hemi-Sphere.
Given- the diameter of the hemispherical tank is 3m

Provided that the hemispherical tank full of water is emptied by a pipe at the rate of

So, 1 liter of water can be emptied in

As, 1 liter of water is emptied from the tank in

sec = 1979.202 seconds
So, 1979.202 seconds =

min =

(approx.)
Hence, the correct answer is option (1)

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