Hero's formula
[heer-ohz]
noun Geometry.
the formula for the area of a triangle when the sides are given: for a triangle with sides a, b, and c, the area is equal to 
, where s is equal to one half the perimeter of the triangle.
, where s is equal to one half the perimeter of the triangle.Origin of Hero's formula
named after Hero of Alexandria
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019