Learn about the definition of pi in relation to a circle with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Every year, the celebration of Pi Day (March 14 is 3.14) grows more ambitious. Math teachers love to dream up unique classroom activities to celebrate Pi for it endless opportunity to calculate (3 ...

GCSE OCR Circles, sectors and arcs - OCR Circumference of a circle Circles are 2D shapes with one side and no corners. The circumference is always the same distance from the centre - the radius ...

How to Solve for Radius in Excel. The radius of a circle or a sphere is the distance between the center and the edge. The radius can be used to calculate a circle's diameter, area and circumference.

For example, it is used to calculate the circumference of a circle (U = 2πr) or the area of a circle (A = πr ^ 2). What is mathematically interesting is that pi has no regularity or repetition.