For this case we have that by definition:
1 foot equals 12 inches
Then, the sections measure:
1ft ------------> 12in
4ft ------------> x
Where "x" represents the inches of each section.
Thus, each section measures 48 inches.
If the pieces of wire to be removed must be 5 inches each, then from a section they are removed:
Now, from each section you can remove 6 pieces of wire.
Then, from 6 sections, it takes pieces of wire.
Answer:
36