Answer:

Step-by-step explanation:
We can divide the yellow area in one rectangle and two squares. The dimensions of the rectangle is 10in by 2in, because the base of such rectangle is found by subtracting 4 inches and 2 inches, that would give us the measure of the base of the rectangle.
So, the area of the rectangle is

Now, the dimensions of the square is 2 inches by 2 inches, according to the graph. So, the area of each square is

The total area would be

Therefore, the right answer is 