Question
The volume of a right circular whose curved surface area is 2640 cm and circumference of its base is 66 cm is :
Answer: Option C
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`2 pi r = 66`
`rArr r = (66 xx 1/2 xx 7/22)` = `21/2`cm
`(2pi r h)/(2 pi r) = (2640/66)`
`rArr h = 40 `cm
`:.` Volume = `( 22/7 xx 21/2 xx 21/2 xx 40) cm^3`
= 13860`cm^3`
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