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HMMT 2009 F8

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The incircle ω\omega of equilateral triangle ABCA B C has radius 1. Three smaller circles are inscribed tangent to ω\omega and the sides of ABCA B C, as shown. Three smaller circles are then inscribed tangent to the previous circles and to each of two sides of ABCA B C. This process is repeated an infinite number of times. What is the total length of the circumferences of all the circles?

Dataset text NuminaMath olympiads. Quoted with source.

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5 \pi

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