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The radius of a sphere is 3 cm. Find, in terms of π, its volume.

Mathematics
WAEC 2023

The radius of a sphere is 3 cm. Find, in terms of π, its volume.

  • A. \(30\pi cm^3\)
  • B. \(108\pi cm^3\)
  • C. \(27\pi cm^3\)
  • D. \(36\pi cm^3\)
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Correct Answer: Option D
Explanation

Given that radius = 3cm.

volume of sphere = \(\frac{4}{3}\times\pi\times r^3\)

= \(\frac{4}{3}\times\pi\times 3^3\)

= \(\frac{4}{3}\times\pi\times 27\)

= \(4\times\pi\times9\)

= \(36\pi cm^3\)


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