Answer:
wall area to be painted = 322 ft²
Explanation:
The front wall and back wall have the same length and width.
The left wall and the right wall have the same length and width.
We need to add 2 times the area of the front wall plus 2 times the area of the left wall and then subtract the areas of the door and windows.
wall area to be painted =
= 2 × 12 ft × 8 ft + 2 × 10 ft × 8 ft - 22 ft² - 2 × 2 ft × 2 ft
= 192 ft² + 160 ft² - 22 ft² - 8 ft²
= 322 ft²