# How do I calculate the radius for a n-gon's circumcircle?

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Spa8nky    230
If I know the centroid of a n sided polygon, how can I calculate the radius of its circumcircle? (The minimum circle that encompasses all of the polygon's vertices) Thank you.

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irreversible    2862
Maximum distance between all point pairs (edit: divided by two, that is, since you're looking for the radius :) ). Or if your barycenter is computed correctly, max distance from each point to the barycenter.

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