Introduction
Heron's formula: √[s(s-a)(s-b)(s-c)]
Heron's FormulaSemi-perimeter
Class 9 CBSE - Calculate area of triangles using Heron's formula when height is not known.
Learn Heron's formula to find the area of a triangle when only the three sides are known. Apply this to find areas of quadrilaterals by dividing them into triangles.
Start Learning →Practice problems.
Chapter summary.
Additional resources.