Question

what is the area of the trapezoid? 3 mi. 5 mi. 7 mi. 9 mi. square miles

Explanation:

Step1: Recall area formula

The area formula for 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, $b_1 = 3$ mi, $b_2=9$ mi, and $h = 5$ mi.

Step3: Substitute values into formula

$A=\frac{(3 + 9)\times5}{2}=\frac{12\times5}{2}$.

Step4: Calculate

$\frac{12\times5}{2}=\frac{60}{2}=30$ square miles.

Answer:

30