You want to compute the total area of the figure. The figure is composed by four 6x4 rectangles, and two 4x4 squares.
The area of one rectangle is [tex] 6\cdot 4 = 24 [/tex]
The area of one square is [tex] 4\cdot 4 = 16 [/tex]
You have four rectangles and two squares, so the answer is
[tex] 4\cdot 24 + 2 \cdot 16 = 96+32=128[/tex]
