Question

CLASS- 9 HERON'S FORMULA
1) find the area of an equilateral trimgle whose perimeter is 60cm​

Answer 1

Answer:

see below

Step-by-step explanation:

if its perimeter is 60 each side is 60/3 = 20.

Its height will be 10√3 so area is 20 * 10√3 / 2 = 100√3