For this type of problem we add up the individual areas of each region, in this case we have 3 squares and 2 triangles, the squares have sides of 6 m of lenght and the triangles have a base of 6 m and a height of 4 m.
Recalling that the area of a square is sides* side, the area of each square is

and the area of a triangle is

Finally we add up the areas:

Answer: The area is 132m^2.