Answer:
3053.6 mm³
Step-by-step explanation:
The volume of a sphere is given by the formula ...
V = 4/3πr³ . . . . . where r is the radius, half the diameter
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For the given sphere, the volume is ...
V = 4/3π(9 mm)³ = 972π mm³ ≈ 3053.6 mm³
