Answer:
Correct answer: SA = 108 · π ft²
Step-by-step explanation:
Given:
Diameter of the sphere d = 12 ft
d = 2 · r where r is radius
r = d / 2 = 12 / 2 = 6 ft
r = 6 ft
SA = 3 · r² · π
SA = 3 · 6² · π = 3 · 36 · π = 108 · π
SA = 108 · π ft²
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