Le 2019-12-09 à 02:39, Thomas de Groot a écrit :
> Given a circle with known radius, what is the length of the arc segment 
> formed between two radii with a known angle?
> 
> if you understand what I mean; that description feels awkward... :-/
> 

You only need to convert that angle into radiant, then multiply by the 
radius :

Just use the builtin macro :

#declare ArcLength = radians( AngleInDegree ) * Radius;

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