To find the height of the parallelogram, you can use the area formula:
\[ \text{Area} = b \cdot h \]
where \(b\) is the base and \(h\) is the height.
You know the area is 108 square feet and the base is 9 feet. Plugging the values into the equation, you have:
\[ 108 = 9 \cdot h \]
To solve for \(h\), divide both sides by 9:
\[ h = \frac{108}{9} = 12 \text{ ft} \]
The height of the parallelogram is 12 ft.