A model of a red blood cell portrays the cell as a spherical capacitor, a positively charged liquid sphere of surface area A separated from the surrounding negatively charged fluid by a membrane of thickness t. Tiny electrodes introduced into the interior of the cell show a potential difference of 100 mV across the membrane. The membrane's thickness is estimated to be 103 nm and has a dielectric constant of 5.00. If an average red blood cell has a mass of 1.00×10^−12 kg, estimate the volume of the cell and thus find its surface area. The density of blood is 1100 kg/m^3. .