Question

The area of circle inscribed in an equilateral triangle is 22 cm2 . Find the perimeterof the triangle​

Answer 1

Area of the circle = 154 sq cm

⇒

⇒

⇒  

⇒r = 7 cm

Let the side of the triangle = a cm

So, s =  

But the radius of the incircle,   Where Δ = Area of the triangle and s = semi-perimeter

Perimeter of triangle,  

Perimeter of triangle = 42(1.73) = 72.66 cm