Mathematics
A right cylindrical vessel is full with water. How many cones having the same diameter and height as those of the right cylinder will be needed to store that water?
2
3
4
5
Mensuration
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Answer
Volume of cone =
Volume of cylinder = πr2h
Let the number of cones required be n.
∴ Volume of cylinder = n × Volume of cone
⇒ πr2h = n ×
⇒ 3 × πr2h = n × πr2h
∴ n = 3
Hence, option 2 is the correct option.
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