Q4 of 62 Page 11

Find the equation of the circle with centre (1,1) and radius .


Here, h = 1, k = 1 and r = . Therefore, the required equation of the circle is

(x - 1)2 + (y -1)2 = ()2

or x2 – 2x + 1 + y2 – 2y + 1 = 2

or x2 + y2 – 2x – 2y = 0.

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