ok as when I list all of my problems I just need ideas of where to start and go towards no the final answer though. The problem states: A block of metal has a 90 degree notch cut from its lower surface. The notched part rests on a circular cylinder of diamter 2.0 cm. If the lower surface of the part is 1.3 cm above the base plane, how deep is the notch? I have attached a file that shows the diagram. Any help would be appreciated.