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Comenius Abbatiale Saint Etienne Dipl.-Math. T. Günther
At the 2012 Comenius meeting in France we visited the Abbatiale Saint Etienne.
Three stones of its wall are arranged in a (part of an) circle:
1. Exercise: The arclength b1 and b2 and the distance d of the two circles can be meassured: b1 = 60cm, b2 = 70cm andd = 25cm (see sketch above). Determine the radius r of the smal circle.
2. Exercise: Establish a formula for the radius r in general case.
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