Answer:
Alternative A - 972π cu units
Step-by-step explanation:
The volume of a sphere can be calculated as follows:
V = 4/3πr³
where
V=volume of the sphere
r = radius of the sphere
Since the radius of the sphere is 9:
V = 4/3π(9)³
V = 4/3π*729
V = (4*729)/3π
V = 972π cu units