Multiple Choice
Describe the surface with equation x2 + y2 + z2 - 6x + 2y - 12z = 75.
A) sphere with centre at (3, -1, 6) and radius
B) sphere with centre at (-3, 1, -6) and radius
C) sphere with centre at (3, 1, 6) and radius 11
D) sphere with centre at (3, -1, 6) and radius 11
E) sphere with centre at (3, 1, 6) and radius
Correct Answer:

Verified
Correct Answer:
Verified
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