A sphere of radius 18 cm is sitting on a table. We cut the sphere with a plane parallel to the table at a distance 20 cm from the table. Find the volume V of the part of the sphere above the cutting plane. V : cm3 Now suppose the portion of the sphere below the plane is filled with a liquid of density p = 1.25 g/cm.Find the amount of work W needed to pump the liquid over the top of the plane. kg m W = sec