1. The problem statement, all variables and given/known data In figure 1, take the half-cylinder's radius and length to be 3.4cm and 15cm respectively. If the electric field has magnitude 5.9 kN/C, find the flux through the half-cylinder. Hint: You don't need to do an integral! Why not? 2. Relevant equations 3. The attempt at a solution I tried finding the area of the cylindrical surface and multiplying that by the magnitude of the electric field. That didn't work. Then I tried finding the area of the rectangle that would be the further side of the half-cylinder and multiplying that by the electric field but again, that didn't work. Do I need to use a different equation? I was originally using flux = E * A. Should I be using something else?