Browse 40+ circle perimeter formula stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Geometry of a circle with ...

The ability to round a number to a number of decimal places or to a number of significant figures is essential if answers are to be written to the correct degree of accuracy asked for in a question.

Remember that the perimeter is the distance round the outside. The perimeter of a semicircle is half of the circumference plus the diameter.