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If one of the diameters of the circle, given by the equation `x ^(2) + y^(2) + 4x + 6y -12 =0,` is a chord of a circle S, whose centre is `(1,-3), ` the radius of S is

A

`sqrt41` units

B

`3sqrt5` units

C

`5sqrt2` units

D

`2 sqrt5` units

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The correct Answer is:
A
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TARGET PUBLICATION-CIRCLE AND CONICS -COMPETITIVE THINKING
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