Final answer:
The volume of a sphere with a radius of 9 cm is 972π cm³.
Step-by-step explanation:
The volume of a sphere is given by the formula:
V = (4/3)πr³
where r is the radius of the sphere.
Given that the radius of the sphere is 9 cm, we can substitute this value into the formula:
V = (4/3)π(9 cm)³
V = (4/3)π(729 cm³)
V = 972π cm³
Therefore, the volume of the sphere is 972π cm³, which corresponds to option d).