Ohio Learning Standards
OH.8.NS. THE NUMBER SYSTEM
Know that there are numbers that are not rational, and approximate them by rational numbers.
8.NS.1. Know that real numbers are either rational or irrational. Understand informally that every number has a decimal expansion which is repeating, terminating, or is non-repeating and non-terminating.
Solve real-world and mathematical problems involving volume of cylinders, cones, and spheres.
8.G.9. Solve real-world and mathematical problems involving volumes of cones, cylinders, and spheres.