Question

Find the area of an equilateral triangle whose value is 18 cm​

Answer 1

`18 + 18 + 18 = 18 * 3 = 54`

Explanation:

I ain't sure but it might help you out:D

Answer 2

140.3 cm²

Explanation:

area of an equilateral triangle

`= (√(3) )/(4) {a}^(2)`

where a is the side of the triangle

`= ( √(3) )/(4) * {18}^(2) \\ = 140.3 \: cm {}^(2)`