Here’s a little more about the holiday’s origin and how it’s celebrated today. Pi can calculate the circumference of a circle by measuring the diameter — the distance straight across the circle’s ...

To find the circumference in terms of π. When the π button is used on a calculator the answer is automatically given in terms of π. Working without a calculator, the circumference is the ...

Building the full value of pi has been a project thousands of years in the making, but just how much of this infinite number do we actually need, asks our maths columnist Jacob Aron ...

Around 250 B.C., the Greek mathematician Archimedes calculated the ratio of a circle's circumference to its ... rather than measured, calculation of pi. How did he do it? The interactive at ...

To calculate the WHR, divide the first measurement (waist circumference) by the second measurement (hip circumference). Measurements can be in centimeters (cm) or inches (in) without affecting the ...