Question 10
If $P_1P_2P_3P_4P_5P_6$ is a regular hexagon whose apothem (distance from the center to the midpoint of a side) is $2,$ and $Q_i$ is the midpoint of side $P_iP_{i+1}$ for $i=1,$ $2,$ $3,$ $4,$ then the area of quadrilateral $Q_1Q_2Q_3Q_4$ is