# Circumcircle of a triangle

This online calculator determines the radius and area of the circumcircle of a triangle given the three sides

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Yet another triangle calculator, for those who needed radius of triangle circumcircle.

Radius can be found like this:

where S, area of triangle, can be found using Hero's formula

Calculator determines radius, and having radius, area of circumcircle, area of triangle and area ratio - just for reference

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