1. The problem statement, all variables and given/known data Suppose you constructed a capacitor using two 5cm*25cm sheets of foil and a 0.3mm thick piece of paper (k=3.7). What is its capacitance? Calculate to 1 decimal place. Use units of "nF". (1nF=1*10^-9F) 2. Relevant equations where d is the distance between the 2 sheets, A is the area of 1 sheet. 3. The attempt at a solution The equation above is the only equation I could find that involved area of a capacitor. I found A = (0.25m)(0.05m) = 0.0125m2. I don't know where the paper comes in, nor do I understand what 'k' is and what formula I am supposed to use for it.