1.

Ratio of volumes of cylinder and cone whose radii are equal and having same height is (A) 1 : 3 (B) 1 : 2 (C) 3 : 1 (D) 2 : 1

Answer»

Correct option is: (C) 3 : 1

Let r & h be the radius and height of cone and cylinder.

Now, \(\frac {volume\, of\, cylinder}{volume\, of\, cone} = \frac {\pi r^2h}{\frac 13 \pi r^2h} = \frac 31\)

Hence, the ratio of volumes of cylinder and cone is 3 : 1.

Correct option is: (C) 3 : 1


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