$\"\"$

The height of the parallelogram is 13.5 ft.

The base of the parallelogram is four times the height.

$\"\"$ ft.

Area of the parallelogram is $\"\"$

$\"\"$

$\"\"$ (Substitute 54 for b and 13.5 for h)

$\"\"$ (Multiply: $\"\"$ )

The area of the parallelogram is 729 $\"\"$

$\"\"$

The solution is D.