## NCERT Solution Exercise 12.1 Heron’s Formula Class 9

Formula For the area of a triangle in different cases: (i) When Base and Height are Given Area of Triangle = 1/2 × ( Base × Height ) (ii) When all three sides are given S = (a+b+c)/2 By Heron’s Formula Area of Triangle = √s(s-a)(s-b)(s-c) Q1. A traffic signal board, including ‘SCHOOL AHEAD”,…