Question

find the area of an equilateral triangle of side 2cm

Answer 1

I hope this answer will help you

Answer 2

(3^1/2)/4*l^2 is the equation   here l=2cm                                                                     hence (3^1/2)/4*l^2=(3^1/2)/4*2^2=(3^1/2)/4*4=(3^1/2)=1.732 cms

(here* stands for multiplication)