The circumference is the perimeter of a circle. It is a length and so is measured in \(mm\), \(cm\), \(m\) or \(km\). An area is measured in square units: \(mm^{2 ...

Learn about perimeters and how to calculate the perimeter of a simple shape with ... Circumference of a circle Learn about definition of pi in relation to a circle. Area of circles Learn about ...