This document provides a guide for learning about revolution and round bodies. It includes information on cylinders, cones, and spheres. For cylinders, it defines key terms like height, radius, and provides formulas for calculating area and volume. Similar information and examples are given for cones and spheres. Practice problems are provided to calculate area and volume of various shapes. The document aims to help students understand and apply concepts of revolution bodies through examples, explanations, and practice problems.