Answer:
Correct answer: V = 486 π ft³
Step-by-step explanation:
Given:
Diameter of the sphere d = 18 ft
d = 2 · r where r is radius
r = d / 2 = 18 / 2 = 9 ft
r = 9 ft
V = (2/3) · r³· π
V = (2/3) · 9³ · π = (2/3) · 729 · π = 486 π ft³
V = 486 π ft³
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