Question

Find the perimeter of an equilateral triangle whose area is 9√3 cm²​

Answer 1

> Perimeter of triangle is 18 cm

Correct Question:

Find the perimeter of an equilateral triangle whose area is 9√3 cm²

Solution:

we know that area of equilateral triangle is

√3a²/4

it is given that,

area of equaleteral triangle is 9√3

therefore,

√3 a² / 4 = 9√3

= a²/4 = 9

= a² = 36

= a = √36 = 6 cm

So , the side of equaleteral triangle is 6 cm

Hence, Perimeter of equaleteral triangle is

6 x 3 = 18 cm