App Description

Calculate the area of the triangle: the length of the known three sides

It is known that the three sides of the triangle a, b, c, then (\(p=(a+b+c)/2\))

Triangle area \(S=√[p(p-a)(p-b)(p-c)]\)

Triangle area \(S=(1/4)√[(a+b+c)(a+b-c)(a+c-b)(b+c-a)]\)

Usage example

Input data: side length a---5; side length b---9; side length c---12, click "calculate" to get the result.

Output: The area of the triangle is 20.396.

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