How do you find the area of an equalateral triangle?

Answer 1

Do you mean an equilateral triangle?

Then if so then the formula for the area of any triangle: 0.5*a*b*sinC whereas a and b are the embraced sides of angle C

And in the case of an equilateral triangle it is: 0.5*any side squared*sin(60 degrees)

Alternatively use Pythagoras' theorem to find the altitude of the triangle then use: 0.5*base*height = area