1. A 0.25-in.-thick copper plate is to be cold worked 63%. Find the final thickness.
2. A 0.25-in.-diameter copper bar is to be cold worked 63%. Find the final diameter.
3. A 2-in.-diameter copper rod is reduced to a 1.5-in. diameter, then reduced again to a final diameter of 1 in. In a second case, the 2-in.-diameter rod is reduced in one step from a 2-in. to a 1-in. diameter. Calculate the % CW for both cases.