Find the locus of a point, the sum of sq...

Find the locus of a point, the sum of squares of whose distances from
the planes `x-z=0, x-2y+z=0 and x+y+z=0` is 36.

A

(a) `x^2+y^2+z^2=6`

B

(b) `x^2+y^2+z^2=36`

C

(c) `x^2+y^2+z^2=216`

D

(d) `x^2+y^2+z^2=(1)/(36)`

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The correct Answer is:

B

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