The figure is composed of 1 rectangle and 2 triangles.
Area 1: rectangle
Area of a rectangle:Length x width
Length : 6
width : 4
A1 = 6 x 4 = 24 ft2
Area 2: triangle
Area of a triangle: 1/2 x base x height
Base = (9-6)/2 = 1.5
heigth = 4
A2 = A3 = 1/2 x 1.5 x 4 = 3 ft2
Finally, add all the areas:
Area of the figure: A1 + A2 + A3 = 24 + 3 + 3 = 30ft2