In 1635 Bonaventura Cavalieri, a student of Galileo, statedthe following result, calledCavalieri's principle:If twosolids have the same height, and if the areas of their crosssections taken parallel to and at equal distances from theirbases are always equal, then the solids have the same vol-ume. Use this result to find the volume of the oblique cylin-der in the accompanying figure