1. The problem statement, all variables and given/known data A spherical capacitor contains a charge of 3.10nC when connected to a potential difference of 220V . If its plates are separated by vacuum and the inner radius of the outer shell is 5.00cm . Part A) Calculate the capacitance. 2. Relevant equations C = Q/V C = Aε0/d 3. The attempt at a solution I tried plugging in the values into C = Q/V C = (3.1x10^-9 C)/220V C = 1.409x10^-11 F But it didn't accept this. Any suggestions?