In this type of triangle, the legs are x and Therefore, the height of
the triangle is units long. Now the area of the 30–60–90 triangle can
be calculated:The equilateral triangle is two of these; the area is 2 × 55.425 ≈ 110.85.40 . B
A regular hexagon is made up of six equilateral triangles, in this case with
length of 5 units: