The volume formula of the cylinder is: V cylinder = π R2× h, where r is the radius of the bottom circle and h is the height of the cylinder.

The volume formula of the cone is: V cone = 1/3 π R2× h, where r is the radius of the bottom circle and h is the height of the cone.

Learning mathematics is a task that requires patience and perseverance. Here are some ways to help you learn math effectively:

Understand the basics: Mathematics is an accumulative subject, so we must first make sure that we have a full understanding of the basic concepts. If necessary, you can review some basic knowledge and establish a solid mathematical foundation.

Grasp mathematical thinking: Mathematical thinking is the key to solving mathematical problems. Cultivating logical thinking, abstract thinking and reasoning ability can be exercised by doing and solving problems.

Make a study plan: make a reasonable study plan and study as planned. Courses and study time can be arranged according to personal learning situation and goals, so as to ensure a certain amount of study time every day.

Actively participate in classroom learning: actively ask questions and participate in discussions in class, interact with teachers and classmates, and better understand and master knowledge.

Lots of exercises: Mathematics is a highly practical subject, and doing a lot of exercises is an effective way to consolidate knowledge and improve skills. Choose exercises that suit your level, from simple to complex, step by step.

Ask for help: If you are in trouble or don't understand something, it is very important to ask for help. You can ask teachers, classmates or the math world, and you can also find relevant reference books and online resources.

Attach importance to mathematical practice: applying mathematics to practical problems is an important way to consolidate and improve mathematical skills. Try to solve practical problems, such as applying mathematics to daily life or other disciplines.

In a word, learning mathematics requires persistent efforts and hard training. Through reasonable study methods and unremitting efforts, I believe you will get good grades in mathematics.