Without knowing the specific measurements of the sides, it is difficult to get an exact area.
However, we can find an approximate area by breaking the composite figure into two pieces - a rectangle and a right triangle.
The rectangle has a length of 5 units (equal to the left side) and a width of half the side length plus half the other half. Since one part of the bottom is three and the other is four, their sum is 7. Dividing by 2 gives us a width of 3.5 units.
Therefore, the area of the rectangle is 5 x 3.5 = 17.5 square units.
The right triangle has a base of 0.5 units (half the difference between the two halves of the bottom) and a height of 5 units. Therefore, the area of the triangle is (0.5 x 5) / 2 = 1.25 square units.
Adding the area of the rectangle and the triangle together gives us an approximate total area of 18.75 square units.