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A circle C1 passes through the origin and has its centre on the line y=x. Let C1 cuts C2:x2+y2−4x−6y+10=0 orthogonally. If the radius of C1 is r, then the value of 8r2 is

Answer» A circle C1 passes through the origin and has its centre on the line y=x. Let C1 cuts C2:x2+y24x6y+10=0 orthogonally. If the radius of C1 is r, then the value of 8r2 is


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