Answer:
The actual length of the second wall is 518.4 in or 43.2 ft
Explanation:
1. Get the 12 ft to inches. 12 x 12= 144
2. Do 144/2.5 because that’s what the 144 was reduced to
3. You get 57.6
4. You times 9 by 57.6 to get it to its original size
5. You get 518.4 inches or convert it to 43.2 ft