Correct Answer:
A. 36π cm³
The volume of a sphere is calculated using the formula V = (4/3)πr³, where 'r' is the radius. For a sphere with a radius of 3 cm:
- V = (4/3)π(3)³
- V = (4/3)π(27)
- V = 4 * 9π
- V = 36π cm³
Therefore, option A is correct. Option B, 9π cm³, might result from an incorrect formula or calculation. Option C, 12 cm³, is a significant miscalculation. Option D is incorrect as a valid answer exists.