Answer:
I'm assuming you don't want to paint the floor.
1220
Step-by-step explanation:
25 * 8 = 200. Now we multiply that by 2 to get 400. Those are the 2 walls.
The ceiling is 25 * 20 = 500.
20 * 8 = 160. Now we multiply that by 2 to get 320. Those are the 2 walls.
500 + 400 + 320 = 1220