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Circles surrounding circles I (Posted on 2024-08-30) Difficulty: 3 of 5
Two unit circles are completely enclosed by a ring of four identical circles. Find the minimum radius of the surrounding circles.

Note: A ring of circles is a set where each is externally tangent to exactly two others and they enclose a single region.

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  Subject Author Date
solnSteven Lord2024-08-30 10:03:58
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