Question:A cylindrical piece of metal of radius `2` cm and height `6`cm is shaped into a cone of same radius. The height of the cone is : 

A `8 cm` 
B `12 cm` 
C `14 cm` 
D `18 cm` 

+ Answer
D 

+ Explanation
`π xx 2^2 xx 6`

`= 1/3 π xx 2^2 xx h ⇒ h`

`= 18 cm.`

+ Report

Irin Moni

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