2. Suppose that you are studying a spherical bacterium with a diameter of 2.0 m. a. What is the surface area, in square centimeters (cm2), of this bacterium? b. What is the volume of this bacterium in cubic meters (m3)? c. A proton has a mass of 1.671027 kilograms and has a radius of roughly 0.85 femtometers. What is the density of the proton in grams per cubic centimeter (gcm3)? d. What would be the mass of this bacterium, in kilograms, if it had the same density as a proton