Water flows at the rate of 10 cubic mm per minute from a cylindrical pipe 5 mm in diameter. A conical vessel, whose diameter at the base is 40 cm and depth 24 cm, is filled. The time taken to fill the conical vessel is
50 minutes
50 minutes 12 seconds
51 minutes 12 seconds
50 minutes 15 seconds
A
50 minutes
B
51 minutes 12 seconds
C
50 minutes 12 seconds
D
50 minutes 15 seconds
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Solution
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Volume of water per minute
Volume of cylinder=πr2h
=π(52)2×10×100×10
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