1. The problem statement, all variables and given/known data Calculate the line integral of A between to points x=1 and x=3 along the semicircular path with a center at x=2 2. Relevant equations A=kx in the x hat direction. [tex]\int A \bullet dl [/tex] dl = ds s hat +s d[tex]\phi[/tex] [tex]\phi[/tex] hat +dz z hat 3. The attempt at a solution My biggest problem seems to be getting that A into cylindrical coordinates so I can take the dot product with the dl.