First, split up the shape into multiple other shapes. We can split it into two triangles, two different triangles, and a square.
The square has area 6.
The first triangle measures 3 x 1, meaning that the area is 3/2. Since we have two, their combined area is 3.
The other two triangles measure 4 x 1, meaning that their area is 2. Since we have two, their combined area is 4.
Thus, the area is 3 + 4 + 6 = 13.