Question

if one side of an equilateral triangle is 4cm then area is

Answer 1

Area of an equilateral Δ = √3 a² / 4

Here, a  = 4 cm

Area  = √3 x 4² / 4 = 4 √3 cm²

Answer 2

area of equilateral triangle is √3a^2/4
or √3*4*4/4
area of triangle is 4√3 cm or 6.92 cm sq