Geometry & Measurement Calculators
Triangle Circumradius Calculator
Find the radius of a triangle's circumscribed circle from its sides.
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What is Triangle Circumradius?
The circumradius is the radius of the circle that passes through all three vertices. It depends on both the side lengths and the triangle's area.
How it works
We compute the area with Heron's formula, then divide the product of the sides by four times that area: R = abc/4K.
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Examples
Realistic sample
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Common mistakes
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