Area of 4 walls of a rooms is $108\;m^2$ . If height and length of room is in ratio $2:5$ and height and breadth in ratio $4:5$ Find the area of floor of the room.

Question

$\begin{array}{1 1} 40\;m^2 \\ 45\;m^2 \\ 60\;m^2 \\ 65 \;m^2 \end{array} $