find the area of this rectangle.

Explanation:

Step1: Recall area formula

The formula for the area of a rectangle is $A = l\times w$, where $l$ is the length and $w$ is the width.

Step2: Identify length and width

Here, $l = 11$ ft and $w=9$ ft.

Step3: Calculate the area

$A=11\times9 = 99$ ft²

Answer:

99 ft²