1. The problem statement, all variables and given/known data A charge of -310e is uniformly distributed along a circular arc of radius 4.15 cm, which subtends an angle of 43°. What is the linear charge density along the arc in C/m? 2. Relevant equations Density = Charge/length 3. The attempt at a solution Charge = -310(1.6E-19) = -4.96E-17 C Length = ?? This is because I don't know what "subtends an angle of 43" means. Does it mean the circular arc is 43/360 degrees of a circle?