When the π button is used on a calculator the answer is ... The radius of the circle is 74 cm to the nearest cm. Practise pi and working out the circumference of circles with this quiz.

Pi can calculate the circumference of a circle by measuring the diameter — the distance straight across the circle’s middle — ...

If you wanted to calculate the circumference of a circle with this distance as the radius, the difference between using the first 16 digits of pi compared with hundreds of digits would be less ...

The previous calculation of 5 Trillion digits of Pi took 90 days to calculate on a beast of a workstation. The calculations were performed on 2x Xeon processors running at 3.33 GHz, 96 Gigabytes ...