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If one of the diameters of the circle x^2 + y^2 - 2x - 6y + 6 = 0 is a chord to the circle with centre (2, 1), then the radius of the circle is

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If one of the diameters of the circle x2 + y2 - 2x - 6y + 6 = 0 is a chord to the circle with centre (2, 1), then the radius of the circle is

(a) √3

(b) √2

(c) 3

(d) 2

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1 Answer

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Best answer

Correct option: (c) 3

Explanation:

Here radius of smaller circle,

Clearly, from the figure the radius of bigger circle

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