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Let C(1) and C(2) be the centres of the ...

Let `C_(1)` and `C_(2)` be the centres of the circles `x^(2)+y^(2)-2x-2y-2=O` and `x^(2)+y^(2)-6x-6y+14=0` respectively.If P and Q are the points of intersection of these circles,then the area (in sq.units) of the quadrilateral `PC_(1)QC_(2)` is

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