1. The problem statement, all variables and given/known data Hi everyone, the problem I'm stuck on reads: " Imagine a solenoid 3m in diameter, 5m long having 1164 turns of super conducting cable. What length of super conducting cable is used to wind this solenoid?" 2. Relevant equations Circumference = 2pi*radius 3. The attempt at a solution My approach was: Multiply (2pi * 1.5m) * (1164 turns) * (5m) = 54852m I would greatly appreciate help :) Thank you for your time!