Suppose we have
.
Heron’s formula can be used to find area of such a triangle. According to Heron’s formula, we have
Area
. a, b and c are sides of triangle. S is the semi-perimeter of
.
.
Example, we have sides of triangle a, b and c given as 15 cm, 18 cm and 22 cm respectively.
Semi-perimeter of triangle
cm
Area of triangle
Roman says
what is the proper Heron’s formula?