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Two tangents PQ and PR drawn to the circ...

Two tangents PQ and PR drawn to the circle `x^2 +y^2-2x-4y-20=0` from point P(16,7). If the centre of the circle is C, then the area of quadrilateral PQCR will be

A

150 sq units

B

50 sq units

C

75 sq units

D

70 sq units

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