The attic floor, ABCD in the model, is a square. The beams that support the roof are the edges of a block (rectangular prism) EF
GHKLMN. E is the middle of AT, F is the middle of BT, G is the middle of CT and H is the middle of DT. All the edges of the pyramid in the model have length 12m. Calculate the area of the attic floor ABCD.