SSC CHSL 15 Nov S3 – Q065

Question:

A right circular cylinder and a sphere have the same radius. What is the ratio of the volume of cylinder (height = \(2r\)) to that of sphere?

एक लंब वृत्तीय बेलन और एक गोले की त्रिज्या समान है। बेलन (ऊंचाई = \(2r\)) के आयतन का गोले के आयतन से अनुपात क्या है?

Options:

  • 1:1
  • 3:4
  • 3:2
  • 2:3
  • 1:1
  • 3:4
  • 3:2
  • 2:3

Correct Answer: c)

Explanation:

Volume of cylinder = \(\pi r^2 (2r) = 2\pi r^3\).
Volume of sphere = \(\dfrac{4}{3}\pi r^3\).
Ratio = \(\dfrac{2\pi r^3}{\frac{4}{3}\pi r^3} = \dfrac{6}{4} = 3 : 2\).

बेलन का आयतन = \(\pi r^2 (2r) = 2\pi r^3\)।
गोले का आयतन = \(\dfrac{4}{3}\pi r^3\)।
अनुपात = \(2 : \dfrac{4}{3} = 6 : 4 = 3 : 2\)।

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