Area of Triangle with Three Sides (Heron’s Formula) The area of a triangle with 3 sides of different measures can be calculated using Heron’s formula . Heron’s formula includes two important steps. The first step is to find the semi perimeter of a triangle by adding all three sides of a triangle and dividing it by 2. The next step is to apply the semi-perimeter of triangle value in the main formula called “Heron’s Formula” to find the area of a triangle . where, s is semi-perimeter of the triangle = s = (a+b+c) / 2 //OR Area of a Triangle = A = ½ (b × h) square units Area of an Equilateral Triangle = A = (√3)/4 × side 2 Area of a Right Triangle = A = ½ × Base × Height (Perpendicular distance) The perimeter of a triangle is the distance covered around the triangle and is calculated by adding all three sides of a triangle. The perimeter of a triangle = P = (a + b + c) units where a, b and c are the sides of the triangle.
