Question

Area of equilateral triangle is 36 root 3 cm square find its perimeter by heron's formula

Answer 1

Given perimeter of equilateral triangle = 36 cm Let the side of equilateral triangle be 'a' cm Hence 3a = 36 Therefore, a = 12 cm Area of equilateral triangle = (√3/4) x a2 sq units                                       = (√3/4) x 122                                       = (√3/4) x 144 = 36√3 sq cm                                       = 62.3 sq cm  

Answer 2

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