To solve, you have to break this irregular shape into separate parts, find the area of each regular shape, and add the areas together. I find that it's easiest to break this shape into a rectangle and triangle. So, you have to find the area of both the rectangle and triangle and add the two areas together.
Rectangle:
Length = 2 units
Width = 3 units
Area = Length x Width = 3 x 2 = 6 units²
Triangle:
Base = 2
Height = 2
Area = 1/2BH = 1/2(2)(2) = 2 units²
Total Area:
2 u² + 6 u² = 8 units²
Hope this helps! :)