1.

If 3x+2y=3 and 2x+5y=1 are conjugate lines w.r.t the circle x^(2)+y^(2)=r^(2) then r^(2)=

Answer»

`3/16`
`16/3`
`4/(SQRT(3))`
`(sqrt(3))/4`

ANSWER :A


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