For this case, we have that the figure shown is formed by a square and by two triangles (one on the top and one on the side of the square). By definition, the area of a triangle is given by:
Where:
b: It's the base
h: It's the height
On the other hand, the area of a square is given by;
Where:
l: It's the side of the square.
The total area of the figure will be:
Answer: