148۰0140971 ÷ 2 =74۰00704854. The radius of the circle is 74 cm to the nearest cm. Practise pi and working out the circumference of circles with this quiz. You may need a pen and paper to help ...

Pi (the Greek letter π, pronounced like the word “pie”) is the ratio of the circumference of any circle to the diameter of that circle, explains math instructor Steven Bogart in Scientific ...

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = ...

Archimedes determined the upper and lower range of pi by finding the perimeters ... perimeters ever closer in length to the circumference of the circle and thereby come up with his approximation.

Simply put, Pi is a mathematical constant that expresses the ratio of a circle’s circumference to its diameter. It is part of ...

Unsolvable problems, many-dimensional wheels and new prime numbers are among new mathematical discoveries this year ...

It really isn’t necessary, but there is some geek cred to learning pi to some bizarre number of digits. One way to do that is via a piem — a mnemonic device that is easy to remember and gives ...

Daniel Lee Tsz-tan, 17, Law Ting Pong Secondary School: “Pi” (π) would be great to describe my family. In maths, the circumference divided by the diameter of a circle is always “pi”.