Q12 of 68 Page 16

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


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