A circle is a shape where every point at its edge is the same distance from the centre. A circular shape or object is one that is in the form of a circle. How many of these circular objects can you ...

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.

A crop circle thought to be inspired by a formula acclaimed as the most beautiful in all mathematics has appeared on a hillside in Wiltshire. By Matthew Moore and Matthewmoore 24 May 2010 • 5:30pm The ...