The area of a circle inscribed in an equilateral triangle is 154cm2. Find the perimeter of the triangle.
Area of inscribed circle = 154cm2
= πr2 = 154cm2
Radius of inscribed circle = 7cm
(a = side of triangle)
a = 
Perimeter of equilateral triangle = 3a
(given)
= 72.66 = 72.7cm2
12