Mathematics
A solid cylinder, made of iron is melted and recasted into solid cones of same radius of cross-section and height. Then the number of cones obtained is :
2
6
3
4
Mensuration
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Answer
Let radius of both be r cm and height be h cm.
Let number of cones formed be n.
Then,
Volume of cylinder = n × Volume of cone
πr2h = n ×
n = = 3.
Hence, Option 3 is the correct option.
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