Question

what is the area of an equilateral triangle with side lengths of 10?

Answer 1

formula ⇒ √3/4 × a²
             ⇒ √3/4 × 10²
             ⇒√3/4 × 100
             ⇒√3 × 25
             ⇒1.732 × 25
             ⇒43.3