Answer:
28²
Step-by-step explanation:
Cut the rectangle into two parts to make it easier.
Add 3 and 3 to get 6, and then subtract from 8 to get the width of the vertical rectangle.
6 x 2 = 12, so that is the area of the vertical rectangle.
The horizontal rectangle is just 8 x 2, which is 16.
Add 12 and 16 together to get 28².
