A pendant drop experiment is conducted in which oil and water interfacial tension is to be measured. At the widest point of the drop, the diameter was measured at 0.22 in. At the vertical distance of 0.22 in from the bottom of the drop, the distance across the drop is measured at 0.10 in. The water density is 1.05 gm/cc and the oil density is 0.85 gm/cc. Calculate the IFT in dyne/cm. Give the citation for and details of the calculation to find H. Be careful about the units.