Question

The equation for find area of triangle

Answer 1

If it is a right triangle then we can use theformula of half the product of its base and height to calculate the area. If it not a righttriangle then we can either use Heron's formula or the determinant of a matrix. where a, b, and c are the lengths of the sides and s is half the perimeter...

SO THE FORMULA TO FIND THE AREA OF TRIANGLE IS:
1/2 × b× h

Answer 2

It is 
Area of a triangle = 1/2 * base * height 
                  AND
Area of a triangle = √s * (s-a) * (s-b) * (s-c)   [square root for all the terms]
                           where, s = semi perimeter [ perimeter/2]
                                       a = first side of the triangle
                                       b = second side of the triangle
                                       c = third side of the triangle

And the are of an equilateral triangle = √3/4 * a²   [square root is only for 3]
                           
(: hope this helpz :)