What is heron's formula?
Under root s(s-a)(s-b)(s-c)
Firast u have to find s than use this formula
S(a-s)(b-s)(c-s) in root
I think this may have helped u
Where s is the semi-perimeter.
The most simple way of calculating area of triangle
Refer to class ix R.S. aggarawal book , page no 232
Simplest way to caculat area of triangle
What is the area of india
Herons formulae is the way to find the area of a triangle