Question

If the area of an equilateral triangle is 81√3 cm, find its perimet​

Answer 1

Answer:

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Step-by-step explanation:

Area of an equilateral triangle = ( √3 / 4 ) × a²

81 √3 = ( √3 / 4 ) × a²

a² = 324

a = 18 cm

Perimeter of an equilateral triangle = 3a

= 3 × 18

perimeter of an equilateral triangle = 54 cm