WAEC - Mathematics (2023 - No. 20)
The radius of a sphere is 3 cm. Find, in terms of π, its volume.
\(30\pi cm^3\)
\(108\pi cm^3\)
\(27\pi cm^3\)
\(36\pi cm^3\)
解释
Given that radius = 3cm.
volume of sphere = \(\frac{4}{3}\times\pi\times r^3\)
= \(\frac{4}{3}\times\pi\times 3^3\)
= \(\frac{4}{3}\times\pi\times 27\)
= \(4\times\pi\times9\)
= \(36\pi cm^3\)