Answer:
109 mm
Step-by-step explanation:
1. Find the area of the Shaded portion.
16 x 9 = 144
2. Find the area of the Unshaded portion
7 x 5 = 35
3. Subtract the area of the unshaded portion from the shaded portion.
144 - 35 = 109
Hope this helps!
Please correct me if I did anything wrong!
