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|Ring of Circles (Posted on 2013-08-17)
Define a Ring of Circles ROC(n,r,P,a) as a set of
n≥3 circles (each with radius r, each with center on
a circle with center P and radius a, and each
externally tangent to both its neighbors).
With b>a, each of the circles in ROC(6,R,P,b)
is externally tangent to two of the circles in
What is the ratio b/a?
Extra credit - what is the ratio if 6
is replaced with n in the problem?
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