1. The problem statement, all variables and given/known data An ant positioned on the very edge of a Beatles record that is 18.00 cm in radius revolves through an angle of 110.0o as the disk turns. What is the ant's path length? What is the magnitude of the ant's displacement? 2. Relevant equations Ac=v^2/r T=2pir/v 3. The attempt at a solution I'm really confused about this because if I don't have a velocity, how could I use any Circular Motion & Rotation equations to calculate the length? I calculated v=(18 cm)(cos(110deg) = -17.98 (in radians) but I know this isn't right?