Answer: He needs 1456 feet of wood to complete his home project.
Explanation:
1. You know that he needs 13 pieces of wood to complete his home project. Each one of the pieces is 112 feet long.
2. Therefore, to calculate the quantity of wood he need to complete the project (which you can call
), you need to multiply 13 pieces by the the lenght of each one of them (12 feet), as you can see below:

3. Therefore, he needs 1456 feet of wood.