Question

1. area = ________

Explanation:

Step1: Recall trapezoid area formula

The formula for the area of a trapezoid is $A=\frac{(b_1 + b_2)h}{2}$, where $b_1$ and $b_2$ are the lengths of the parallel - sides and $h$ is the height.

Step2: Identify values

Here, $b_1 = 8$ ft, $b_2=12$ ft, and $h = 9$ ft.

Step3: Substitute values into formula

$A=\frac{(8 + 12)\times9}{2}=\frac{20\times9}{2}$.

Step4: Calculate the result

$\frac{20\times9}{2}=90$ square feet.

Answer:

$90$ square feet