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Given 3 circles with radius r1,r2 and r3, and each one of them is (outer)tangent to other 2 circles. How to find the radius of the circle that is "squezzed in(outer tangent)" those 3 circles?
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Project Euler #199: Iterative Circle Packing
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Given 3 circles with radius r1,r2 and r3, and each one of them is (outer)tangent to other 2 circles. How to find the radius of the circle that is "squezzed in(outer tangent)" those 3 circles?