Answer:
1863 m^2
Step-by-step explanation:
We break down the complex figure into simpler parts, find the areas of the parts, and then sum up the results.
Deleting the entire 23 m-wide vertical middle part, we end up with a rectangle
31 m high and (69 - 23) m wide: 31 m by 46 m. The area of this rectangle is (31 m)(46 m) = 1426 m^2.
Next, we find the are of that middle part we deleted earlier. Its height is (31 - 12) m and its width is 23 m. Thus, this area is 19 m by 23 m, or 437 m^2.
The total area of the figure is (1426 + 437) m^2, or 1863 m^2.
