Answer:
7 or [tex]7^{2}[/tex]
Step-by-step explanation:
Each triangle has the surface area of 1.5, because 1 [tex]*[/tex] 3 = 3 / 2 = 1.5. You divide by two because it is half a rectangle instead of a full one. You multiply by four which would get you 1.5 [tex]*[/tex] 4 = 6. The square in the middle has the surface area of 1 because 1 [tex]*[/tex] 1 = 1. So you would get 7.
