Question

the area of equilateral triangle is 36√3sq.cm .find the perimeter

Answer 1

√3÷4×a∧2=36√3
a^2=144
a=12
so perimeter = 12+12+12
                     =36cm

Answer 2

given,

Area of equilateral triangle = 36√3 cm².

We know,

Area of equilateral triangle = √3/4a²

=>36√3 cm² = √3/4 a²

=>a² = 36 × 4 cm²

Thus,its side (a) = 12 cm

now, its perimeter = 3 × side
= 3 × 12
= 36 cm Ans.


Thanks