1.

Let L: x-2y+4z=9 be a plane, P(2,1,-1) be a point and O, be the Origin. Q is the foot of the perpendicular from P on the plane L, then (OP)^(2)+(PQ)^(2) is equal to

Answer»

`(190)/(21)`
`(43)/(21)`
`(295)/(21)`
`(211)/(21)`

ANSWER :C


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