Calculate Parallelogram Area Using Exterior Height: 10-Unit Height Problem

To solve for the area of the parallelogram, consider the following details:

• Step 1: Identify the base and height of the parallelogram. Here, the side that is used as the base is BD, which has an external perpendicular line, CF, indicating the height.
• Step 2: Given that $CF = 12$ (the height), and the base $BD = 10$, you can calculate the area using the formula $\text{Area} = \text{base} \times \text{height}$.

Given these values, the area calculation is as follows:
Step 2: The base $BD$ is 10, and the height $CF$ is 12. Thus:
$\text{Area} = 10 \times 12 = 120$.

Therefore, the area of the parallelogram is $120$.