To find the area of the polygon, we first find the area of the rectangle:
Area of rectangle = length x width
Area of rectangle = 7.2 x 6
Area of rectangle = 43.2
Next, we find the area of the trapezoid:
Area of trapezoid = 1/2 x (sum of bases) x height
Area of trapezoid = 1/2 x (6 + 1) x 3
Area of trapezoid = 1/2 x 7 x 3
Area of trapezoid = 10.5
Finally, we find the total area of the polygon by adding the area of the rectangle and the area of the trapezoid:
Total area = Area of rectangle + Area of trapezoid
Total area = 43.2 + 10.5
Total area = 53.7 square units
Therefore, the area of the polygon is 53.7 square units.