Art of Problem Solving
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2001 AMC 12 Problems/Problem 18: Revision history

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  • curprev 12:0512:05, 16 February 2009 Misof talk contribs 3,034 bytes +3,034 New page: == Problem == A circle centered at <math>A</math> with a radius of 1 and a circle centered at <math>B</math> with a radius of 4 are externally tangent. A third circle is tangent to the fi...