Learn how to calculate perimeter and circumference as part of your functional skills level 2 qualification. In this video I show you how to calculate the perimeter of squares, rectangles and triangles as well as the circumference of circles, which is the perimeter of a circle. Knowing how to calculate these will ensure you can answer these types of questions in your functional skills level 2 or GCSE exam. knowing how to calculate the circumference of a circle will also help you to calculate surface area of cylinders which has a bigger formula that you are expected to know at level 2 functional skills