If plane `2x + 3y + 6z + k = 0` is tangent to the sphere` x^2 + y^2 + z^2 + 2x- 2y + 2z- 6 = 0`, then a value of `k` is

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Q 2611678529.     If plane `2x + 3y + 6z + k = 0` is tangent to the sphere` x^2 + y^2 + z^2 + 2x- 2y + 2z- 6 = 0`, then a value of `k` is
A

`26`

B

`16`

C

`-26`

D

None of these

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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