Heron’s Formula
Area of a triangle from three side lengths.
A = √(s(s−a)(s−b)(s−c))
Variables
- a,b,c
- side lengths
- s
- semiperimeter
Example
3,4,5 → 6
How to use this formula
Identify the known values, keep units consistent, substitute the values into the formula, and calculate carefully. Then check whether the result is reasonable for the original problem.