Q11 of 97 Page 772

If the area of an equilateral triangle is 36√3 cm2, find its perimeter.

Given: Area of an equilateral triangle = 36√3 cm2



We know that,


Area of equilateral triangle =




⇒ side2 = 36 × 4


⇒ side = 12 cm


Now,


Perimeter of equilateral triangle = 3 × side


= 3 × 12 cm


= 36 cm


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