1. The problem statement, all variables and given/known data A copper rod is 40.0cm long at 22.0 Celsius. If the rod is heated to 100.0 Celsius, what is it's increase in length. 2. Relevant equations Linear expansion of copper is 16.8*10^-6 3. The attempt at a solution Change in Length= (length)(change in temp.)(α) So... (40.0)(78.0)(16.8*10^-6) =0.052 cm is the change in length? Please let me know if/what I did wrong here.