Question

Find the area of the equilateral triangle ​

Answer 1

3.90 sq cm

Explanation:

`A_(equilateral\: \triangle) = ( √(3) )/(4) * {(side)}^(2) \\ \\ = ( √(3) )/(4) * {(3)}^(2) \\ \\ = (9 √(3) )/(4) \\ \\ = 3.89711432 \: {cm}^(2) \\ \\ \approx \: 3.90 \: {cm}^(2)`