The outer surface the membrane of a spherical cell has a potential which is 60 millivolts higher than the inner surface. The membrane has a thickness of 10^-7 m and the cell has a radius of 2 x 10^-5 m. To a good approximation, the membrane can be considered a parallel plate capacitor with an area given by the surface area of the cell. The dielectric constant of the membrane is 4.0 What is the capacitance of the cell?