How to calculate the shaded area shown in the diagram?

For the given figure, we will find the area
The given figure can be divided into two shapes as shown in the following figure:
Shape (1) is a rectangle:
Length = 9 cm
Width = 6 cm
Area of shape (1) = 9 x 6 = 54 cm²
Shape (2) is a triangle:
Base = 6 cm
Height = 14 - 9 = 5 cm
Area of shape (2) = 1/2 x 6 x 5 = 15 cm²
So, the area of the given figure = 54 + 15 = 69 cm²