Find the ratio of the area of a regular hexagon with sides of 1 unit to the area of an equilateral triangle with sides of 2 units. (Nots: "regular" means that all of the sides and angles are equal)
https://web2.0calc.com/questions/geometry_42685
or
https://web2.0calc.com/questions/find-the-ratio-of-the-area-of-a-regular-hexagon-with-sides