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[" 13.It the two circles "(x-1)^(2)+(y-3...

[" 13.It the two circles "(x-1)^(2)+(y-3)^(2)=r^(2)" and "x^(2)+y^(2)-8x+2y+8=0" intersect in two distinct points,"],[[" (A) "28," (D) "r=2]]

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