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The equation of perpendicular bisectors of the side AB and AC of a triangle ABC are `x-y+5=0` and `x+2y=0` respectively vertex A is `(1,-2)` Area of triangle `A B C` is (in sq. units) (A) `(36)/5` (B) `(18)/5` (C) `(72)/5` (D) None of these

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