Answer:
The missing measurement is 9 miles
Explanation:
we know that
The Area of a parallelogram is equal to
![A=bh](https://img.qammunity.org/2020/formulas/mathematics/college/yuf6lcra082i9rwttsf9hghwp7q1fo1152.png)
where
b is the length of any base
h is the corresponding altitude
The altitude (or height) of a parallelogram is the perpendicular distance from the base to the opposite side (which may have to be extended).
In the figure, the altitude corresponding to the base is 4 miles
substitute
![36=b(4)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/cwth3acuv09nni2ufdcxg62ek9gghjk5d1.png)
Solve for b
Divide by 4 both sides
![b=(36)/(4) =9\ mi](https://img.qammunity.org/2020/formulas/mathematics/middle-school/9b5gsiryg7gke3l3wpu1mar5vas5hswexd.png)
therefore
The missing measurement is 9 miles