Difference between revisions of "2005 AIME II Problems/Problem 8"

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== See Also ==
 
== See Also ==
  
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*[[2005 AIME II Problems/Problem 7| Previous problem]]
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*[[2005 AIME II Problems/Problem 9| Next problem]]
 
*[[2005 AIME II Problems]]
 
*[[2005 AIME II Problems]]
  
  
 
[[Category:Intermediate Geometry Problems]]
 
[[Category:Intermediate Geometry Problems]]

Revision as of 19:58, 7 September 2006

Problem

Circles $C_1$ and $C_2$ are externally tangent, and they are both internally tangent to circle $C_3.$ The radii of $C_1$ and $C_2$ are 4 and 10, respectively, and the centers of the three circles are all collinear. A chord of $C_3$ is also a common external tangent of $C_1$ and $C_2.$ Given that the length of the chord is $\frac{m\sqrt{n}}p$ where $m,n,$ and $p$ are positive integers, $m$ and $p$ are relatively prime, and $n$ is not divisible by the square of any prime, find $m+n+p.$

Solution

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See Also