The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.

1.

The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.

[A].	3 : 7
[B].	7 : 3
[C].	6 : 7
[D].	7 : 6

Answer: Option B

Explanation:

r²h	=	924	r =		924	x 2		= 7 m.
2rh		264			264

And, 2rh = 264 h =		264 x	7	x	1	x	1		= 6m.
			22		2		7

Required ratio =	2r	=	14	= 7 : 3.
	h		6

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