1.

What is the equation to the sphere whose centre is at (-2, 3, 4) and radius is 6 units?

A. x2 + y2 + z2 + 4x – 6y – 8z = 7
B. x2 + y2 + z2 + 6x – 4y – 8z = 7
C. x2 + y2 + z2 + 4x – 6y – 8z = 4
D. x2 + y2 + z2 + 4x + 6y + 8z = 4
Answer» B. x2 + y2 + z2 + 6x – 4y – 8z = 7


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