2016 · Q60
What is the volume of a sphere of radius 3 cm ?
Elementary MathematicsMensuration
- A36π\,{cm}³
- B18π\,{cm}³
- C9π\,{cm}³
- D6π\,{cm}³
Explanation
The volume of a sphere is V = (4/3)πr³. With r = 3 cm, V = (4/3)π×27 = 36π cm³. This matches option A; the distractors 18π, 9π and 6π are surface-area-style values, not the volume.