Answer:
39 1/2 wood
Explanation:
- First: It says that she needs two sides to measure 12 1/2. Meaning you have to add 12 1/2 2 times. Same goes for 7 1/4.
2.Then: 12 1/2 + 12 1/2 = 25----7 1/4 + 7 1/4 = 14 1/2.
3.Finally: Add both 25 & 14 1/2 together to get 39 1/2 wood.
Hope this helps!