The surface area of a sphere with a diameter of 12 units is:
A) 427.0 units squared.
B) 452.2 units squared.
C) 703.4 units squared.
D) 866.6 units squared.
Asphere = 4 π r2
A = 4 • 3.1416 • 62
A = 452.39
This relates to B) . . . they just used 3.14 instead of 3.1416.
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