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[" 3.Let "A" be the centre of the circle...

[" 3.Let "A" be the centre of the circle "],[x^(2)+y^(2)-2x-4y-20=0" .Suppose that the "],[" tangents at the points "B(1,7)" and "D(4,-2)" on "],[" the circle meet at the point "C" .The area of "],[" quadrilateral ABCD is (in sq.units) "],[[" 1) "75," 2) "145," 3) "150," 4) "50]]

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