STEP 0: Pre-Calculation Summary
Formula Used
Inradius of Triangle = sqrt((Side A of Triangle+Side B of Triangle+Side C of Triangle)*(Side B of Triangle+Side C of Triangle-Side A of Triangle)*(Side A of Triangle-Side B of Triangle+Side C of Triangle)*(Side A of Triangle+Side B of Triangle-Side C of Triangle))/(2*(Side A of Triangle+Side B of Triangle+Side C of Triangle))
ri = sqrt((Sa+Sb+Sc)*(Sb+Sc-Sa)*(Sa-Sb+Sc)*(Sa+Sb-Sc))/(2*(Sa+Sb+Sc))
This formula uses 1 Functions, 4 Variables
Functions Used
sqrt - Square root function, sqrt(Number)
Variables Used
Inradius of Triangle - (Measured in Meter) - Inradius of Triangle is defined as the radius of the circle which is inscribed inside the Triangle.
Side A of Triangle - (Measured in Meter) - The Side A of Triangle is the length of the side A, of the three sides of the triangle. In other words, the side A of the Triangle is the side opposite to the angle A.
Side B of Triangle - (Measured in Meter) - The Side B of Triangle is the length of the side B of the three sides. In other words, the side Bof the Triangle is the side opposite to the angle B.
Side C of Triangle - (Measured in Meter) - The Side C of Triangle is the length of the side C of the three sides. In other words, side C of the Triangle is the side opposite to angle C.
STEP 1: Convert Input(s) to Base Unit
Side A of Triangle: 10 Meter --> 10 Meter No Conversion Required
Side B of Triangle: 14 Meter --> 14 Meter No Conversion Required
Side C of Triangle: 20 Meter --> 20 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ri = sqrt((Sa+Sb+Sc)*(Sb+Sc-Sa)*(Sa-Sb+Sc)*(Sa+Sb-Sc))/(2*(Sa+Sb+Sc)) --> sqrt((10+14+20)*(14+20-10)*(10-14+20)*(10+14-20))/(2*(10+14+20))
Evaluating ... ...
ri = 2.95419578350399
STEP 3: Convert Result to Output's Unit
2.95419578350399 Meter --> No Conversion Required
2.95419578350399 2.954196 Meter <-- Inradius of Triangle
(Calculation completed in 00.005 seconds)
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## Credits

Created by Dhruv Walia
Indian Institute of Technology, Indian School of Mines, DHANBAD (IIT ISM), Dhanbad, Jharkhand
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Mumbai University (DJSCE), Mumbai
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## < 7 Radius of Triangle Calculators

Circumradius of Triangle = (Side A of Triangle*Side B of Triangle*Side C of Triangle)/sqrt((Side A of Triangle+Side B of Triangle+Side C of Triangle)*(Side B of Triangle-Side A of Triangle+Side C of Triangle)*(Side A of Triangle-Side B of Triangle+Side C of Triangle)*(Side A of Triangle+Side B of Triangle-Side C of Triangle))
Inradius of Triangle = sqrt((Side A of Triangle+Side B of Triangle+Side C of Triangle)*(Side B of Triangle+Side C of Triangle-Side A of Triangle)*(Side A of Triangle-Side B of Triangle+Side C of Triangle)*(Side A of Triangle+Side B of Triangle-Side C of Triangle))/(2*(Side A of Triangle+Side B of Triangle+Side C of Triangle))
Exradius Opposite to Angle A of Triangle
Exradius Opposite to ∠A of Triangle = sqrt(( ((Side A of Triangle+Side B of Triangle+Side C of Triangle)/2)* ((Side A of Triangle-Side B of Triangle+Side C of Triangle)/2)* ((Side A of Triangle+Side B of Triangle-Side C of Triangle)/2))/ ((Side B of Triangle+Side C of Triangle-Side A of Triangle)/2))
Inradius of Triangle by Heron's Formula
Inradius of Triangle = sqrt(((Semiperimeter of Triangle-Side C of Triangle)*(Semiperimeter of Triangle-Side B of Triangle)*(Semiperimeter of Triangle-Side A of Triangle))/Semiperimeter of Triangle)
Circumradius of Triangle given One Side and its Opposite Angle
Circumradius of Triangle = Side A of Triangle/(2*sin(Angle A of Triangle))

## < 3 Radius of Triangle Calculators

Circumradius of Triangle = (Side A of Triangle*Side B of Triangle*Side C of Triangle)/sqrt((Side A of Triangle+Side B of Triangle+Side C of Triangle)*(Side B of Triangle-Side A of Triangle+Side C of Triangle)*(Side A of Triangle-Side B of Triangle+Side C of Triangle)*(Side A of Triangle+Side B of Triangle-Side C of Triangle))
Inradius of Triangle = sqrt((Side A of Triangle+Side B of Triangle+Side C of Triangle)*(Side B of Triangle+Side C of Triangle-Side A of Triangle)*(Side A of Triangle-Side B of Triangle+Side C of Triangle)*(Side A of Triangle+Side B of Triangle-Side C of Triangle))/(2*(Side A of Triangle+Side B of Triangle+Side C of Triangle))
Exradius Opposite to Angle A of Triangle
Exradius Opposite to ∠A of Triangle = sqrt(( ((Side A of Triangle+Side B of Triangle+Side C of Triangle)/2)* ((Side A of Triangle-Side B of Triangle+Side C of Triangle)/2)* ((Side A of Triangle+Side B of Triangle-Side C of Triangle)/2))/ ((Side B of Triangle+Side C of Triangle-Side A of Triangle)/2))

Inradius of Triangle = sqrt((Side A of Triangle+Side B of Triangle+Side C of Triangle)*(Side B of Triangle+Side C of Triangle-Side A of Triangle)*(Side A of Triangle-Side B of Triangle+Side C of Triangle)*(Side A of Triangle+Side B of Triangle-Side C of Triangle))/(2*(Side A of Triangle+Side B of Triangle+Side C of Triangle))
ri = sqrt((Sa+Sb+Sc)*(Sb+Sc-Sa)*(Sa-Sb+Sc)*(Sa+Sb-Sc))/(2*(Sa+Sb+Sc))

## What is a Triangle?

A Triangle is a type of polygon, which have three sides and three vertices. This is a two-dimensional figure with three straight sides. A triangle is considered a 3-sided polygon. The sum of all the three angles of a triangle is equal to 180°. The triangle is contained in a single plane. Based on its sides and angle measurement, the triangle has six types.

## What is Incircle of a Triangle ?

The Incircle or inscribed circle of a triangle is the largest circle contained in the triangle. It touches the three sides. The center of the incircle is a triangle center called the triangle's Incenter. Incenter is the point of intersection of all the 3 internal angular bisectors of the triangle.

## How to Calculate Inradius of Triangle?

Inradius of Triangle calculator uses Inradius of Triangle = sqrt((Side A of Triangle+Side B of Triangle+Side C of Triangle)*(Side B of Triangle+Side C of Triangle-Side A of Triangle)*(Side A of Triangle-Side B of Triangle+Side C of Triangle)*(Side A of Triangle+Side B of Triangle-Side C of Triangle))/(2*(Side A of Triangle+Side B of Triangle+Side C of Triangle)) to calculate the Inradius of Triangle, The Inradius of Triangle formula is defined as the radius of the circle which is inscribed inside the Triangle. Inradius of Triangle is denoted by ri symbol.

How to calculate Inradius of Triangle using this online calculator? To use this online calculator for Inradius of Triangle, enter Side A of Triangle (Sa), Side B of Triangle (Sb) & Side C of Triangle (Sc) and hit the calculate button. Here is how the Inradius of Triangle calculation can be explained with given input values -> 2.954196 = sqrt((10+14+20)*(14+20-10)*(10-14+20)*(10+14-20))/(2*(10+14+20)).