Question

find the area of the triangle. the height is 9 mi, the base is 8 mi. the unit is square miles.

Explanation:

Step1: Recall triangle area formula

Area = $\frac{1}{2} \times \text{base} \times \text{height}$

Step2: Substitute given values

Base = $8$ mi, Height = $9$ mi
Area = $\frac{1}{2} \times 8 \times 9$

Step3: Calculate the result

$\frac{1}{2} \times 72 = 36$

Answer:

36 square miles