Question

It is the side of an equilateral triangle is y. Find it's area?​

Answer 1

Answer:

3^½ y^2 / 4

Step-by-step explanation:

Using Heron’s formula

Perimeter of triangle is 3y, so the semi-perimeter is 3y/2

Area = (3y/2 x y/2 x y/2 x y/2)^½ = (3y^4 / 16)^½ = 3^½ y^2 / 4

PLEASE MARK BRAINIEST

Answer 2

Area of an equilateral triangle is

√3/4*y^2

This is a very useful formula and will help you many a times