Final answer:
To hang the picture, 60" (or 5 feet) of wire is needed.
Step-by-step explanation:
To calculate the length of wire needed to hang the picture, we need to consider the distance between the hooks and the distance from the rail to the top of the picture.
Given that the picture is 20" wide and the hooks are 10" apart, we can calculate the total distance between the hooks as follows:
- 20" + 10" = 30"
Since the wire attaches to each side of the picture, the total length of wire needed will be twice the distance between the hooks:
- 2 * 30" = 60"
Therefore, you will need 60" (or 5 feet) of wire to hang the picture.