Question

18.Sushant has a vessel of the form of an inverted cone, open at the top,
of height 11 cm and radius of the top as 2.5 cm and is full of water.
Metallic spherical balls each of diameter 0.5 cm are put in the vessel
due to which two-fifths of the water in the vessel flows out. Find how
many balls were put in the vessel. Sushant made the arrangement so
that the water that flows out irrigates the flower beds. What value has
been shown by Sushant?
[CBSE 2014)

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Answer 2

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