Calculating the Circumference and Area of a Circle

In South Africa, Grade 12 students learn about the calculations associated with circles in their math curriculum. To find the circumference of a circle, they use the formula $C = 2\pi r$, where $r$ represents the radius and $\pi$ is a constant approximately equal to 3.14. For the area, the formula $A = \pi r^2$ is employed. These fundamental concepts in geometry allow students to understand the properties of circles and apply them in various mathematical problems.