The equation of a sphere concentric with the sphere x2 + y2 + z2 - 4x - 6y - 8z - 20 = 0 and of double the radius is:

Question

TuteeHUB · Accepted Answer

None of these

TuteeHUB · Answer

x2 + y2 + z2 - 3x - 9y - 6z - 23 = 0

TuteeHUB · Answer

x2 + y2 + z2 - 6x - 9y - 8z - 87 = 0

TuteeHUB · Answer

x2 + y2 + z2 - 4x - 6y - 8z - 167 = 0

1.	The equation of a sphere concentric with the sphere x2 + y2 + z2 - 4x - 6y - 8z - 20 = 0 and of double the radius is:
A.	x2 + y2 + z2 - 3x - 9y - 6z - 23 = 0
B.	x2 + y2 + z2 - 6x - 9y - 8z - 87 = 0
C.	x2 + y2 + z2 - 4x - 6y - 8z - 167 = 0
D.	None of these
Answer» D. None of these

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