Question

Each side of an equilateral triangle measures 9 cm. Find the height, h, of the triangle.

Answer 1

Each side is 9 so half it is 4.5.
Pythagoras a^2 + b^2 = c^2 but rearranged.
9^2 - 4.5^2 = c^2
c^2 = 60.75
c = 7.7942286
c is the height, h.