Area of pink rectangle:
5.7*5= 28.5
Now we need to find the remaining area, which is the blue which is not overlapped. To do this, we can split that area into a triangle on top and a rectangle on the bottom.
Blue triangle:
(6-2)*4/2= 8
Blue rectangle:
2*4=8
Add all the values:
28.5+8+8= 44.5
Final answer: 44.5 ft^2