Find an equation for the sphere with the given center and radius.Center (0, -10, -6), radius = 9
A. x2 + y2 + 9z2 + 20y - 12z = -55
B. x2 + y2 + 9z2 + 20y + 12z = -55
C. x2 + y2 + z2 + 20y + 12z = -55
D. x2 + y2 + z2 + 20y - 12z = -55
Answer: C
Mathematics
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