Area is the size of a two-dimensional surface. From the figure given above a scalene triangle is given with 3 sides as a b and c. Herons Formula Area of a Triangle from Sides You can calculate the area of a triangle if you know the lengths of all three sides using a formula that has been known for nearly 2000 years.
Area ½ c b sin A Which is more simply.
How to use the. Where a b and c are the sides of the triangle and s semi-perimeter ie half the perimeter of the triangle. Try thisDrag the orange dots to reshape the triangle. Lets find out the area of a triangle in coordinate geometry.