Exams › SSC CGL (Prelims) › General

A right circular cylinder has a radius that is three times its height. If the height is 2.1 cm, find the volume of the cylinder. (Use pi = 22/7)

1. 224.65 cm^3
2. 194.72 cm^3
3. 324.86 cm^3
4. 261.95 cm^3

Correct answer: 261.95 cm^3

Solution

Height h = 2.1 cm, radius r = 3h = 6.3 cm. Volume = (22/7) x 6.3^2 x 2.1 = (22/7) x 39.69 x 2.1 = 22 x 39.69 x 0.3 = 22 x 11.907 = 261.954 approximately 261.95 cm^3.

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