You have a suction cup which is 8 cm in diameter. Calculate the mass of the maximum load you can pick up?

Some useful Constants. Water has a density of 1.0 g/cm^3 . Air has a density of 0.0013 g/cm^3. Average sea-level pressure is 101.325 kPa. Pa(pascal) is equal to 1N/m^2 or 1 x 10^-4 N/cm^2. The density of water is 1 g/ml or 10^3 kg/m^3