Magnitude is 15.36 and direction is to the left. Need help with question 4 and 5

The illustration shows a region of space where there is an electric TOP SIDE field. Some of the equipotentials of the field are illustrated. A B C D E (1) What are the voltages of the other lines? The voltage of line A is LEFT SIDE RIGHT SIDE . The voltage of line C is The voltage of line E is 23.2 V 86.8 V (2) Briefly explain or show here how you determined the BOTTOM SIDE voltages: (3) In the previous practice problem, you calculated the magnitude and direction of the electric field. Copy your results of the previous problem here, then use is when needed: The electric field magnitude is directed (4) Where is level V = 0? Calculate how far away from line A is the level arbitrarily chosen to be V = 0. Be very specific as to the location with respect to line A. (5) The source of this field is not in the illustration, but it was a set of large, conductive parallel plates. Each plate had the same amount of charge, |Q| = 3.65 nc, and the same area A, but one plate was positive and the other one was negative. Calculate what was the area of each plate