What is the radius of the sphere `x^2 +y^2 + z^2 -x -y -z=0`?

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Q 2339056812.     What is the radius of the sphere

`x^2 +y^2 + z^2 -x -y -z=0`?
NDA 2011 Paper 1
A

`sqrt (3/4)`

B

`sqrt (1/2)`

C

`sqrt (3/2)`

D

`1/3`

HINT


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

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