The side length of an equilateral triangle is 6 cm. what is the height of the triangle?

You would take the midpoint of one of the sides (3) and do the pythagorean theorem to find the height. 

a^2+b^2=c^2
3^2+x^2=6^2
9+x^2=36
x^2=27
x=5.196 cm or 3sqrt(3)

Ithink the right answer could be 50%