The student consistently and correctly used mathematical notation and terminology throughout the work, including providing equations with correct symbols in the integration and volume calculations. They also provided multiple forms of mathematical representation, such as formulae, diagrams, and graphs, which effectively represented the functions used to calculate the plastic waste of the bottle. Additionally, the student explained all mathematical calculations and described any data presentation, ensuring clarity in their work. The degree of accuracy for rounded values was stated, and results were rounded only at the end of the calculation thread to avoid inaccuracies. However, the student should have defined and explained key terms/variables, such as the volume of revolution, when they were first introduced, and described the main concepts in the introduction to provide a comprehensive understanding of the work.
