问答题

In the xy-plane, the point with coordinates (-6, -7) is the center of circle C. The point with coordinates (-6, 5) lies inside C, and the point with coordinates (8,-7) lies outside C. If m is the radius of C and m is an integer, what is the value of m

【参考答案】

圆C的圆心坐标为(-6,-7),点(-6,5)在圆内,故其半径大于7+5=12;而点(8,-7)在圆外,所以其半径应小于......

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