if the area of an equilateral triange is
cm2.find its perimeter
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Step-by-step explanation:
⟹ Area of a equilateral triangle = √3/4 * a²
⟹ 36√3 = √3/4*a²
⟹ 36√3 * 4 /√3 = a²
⟹ 36 * 4 = a²
⟹ 144 = a²
⟹ a = √144
⟹ a = 12
Perimeter of an equilateral triangle is 3 × side
= 3 × 12
= 36 ans.
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