\item Section 6.1: % Volumes Using Cross-Sections problems 5, 55, 63. \item Section 6.2: % 6.2: Volumes Using Cylindrical Shells problem 39. \item Section 6.3: % 6.3: Arc Length problems 21, 25. \item Section 6.4: % 6.4: Areas of Surfaces of Revolution problem 5.