Question

Find the area of an equilateral triangle of side20 cm

Answer 1

$\textbf{Answer is in Attachment !}$

Answer 2

area of equilateral triangle =  √3/4 x  (20)²cm

area of equilateral triangle=√3/4 x 400

area of equilateral triangle=√3/1 x 100

area of equilateral triangle=100√3 cm²