# Incircle of a triangle

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

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Another triangle calculator, which determines the radius of the incircle

Well, having a radius, you can find out everything else about a circle.

Radius can be found as:

where, S, area of triangle, can be found using Hero's formula, p - half of perimeter.

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**PLANETCALC, Incircle of a triangle

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