Question

find the area of a equilateral triangle whose each side is 30 cm

Answer 1

area of equilateral triangle = 3×side got it so 3 × 30 =90cm

Answer 2

Side of triangle, a = 30 cm

We know that, Area of Equilateral Triangle 
                      = √3/4*a²
                      = √3/4*(30)² = √3/4*900
                      = 225√3 cm² = = 225*1.73 = 389.25 cm²