Question 7
The diagram below shows three overlapping regular hexagons, each with side length 12 cm$^2$. One of the vertices of the middle hexagon coincides with the center $O_1$ of the hexagon on the left, while one of the vertices of the hexagon on the right coincides with the center $O_2$ of the middle hexagon. What is the total area of the two shaded parts? Answer in cm$^2$.
