The given figure can be divided into squares and rectangles, as shown:
The area of the figure is the sum of the areas of the square 1 and the rectangles 2 and 3.
=> Total Area = (1 x 1) + (4 x 5)+ (3 x 5) square units
=> Total Area = 1 + 20 + 15 square units
=> Total Area = 36 sq.units
Hence, the area of the given figure is 36 sq.units.