Find the diameter and the radius of a circle with a circumference of 465 cm. Give the answer to the nearest centimetre. Use π = 3۰142 or the π button on a calculator.

Repeat the circumference- and diameter-finding until you have explored a tiny, medium, big and very large circle. Can you find a relationship that is valid for all the tested circles?

I am Pi, the ratio of the circumference of a circle to its diameter. Picking up the phone here at the Smithsonian, I set out to find out more about Pi and how it is represented in the national ...

A simple guide on how to show the circumference of a circle is π x diameter aimed at children aged between 11 and 14 ...

No matter how big your circle, the ratio of circumference to diameter is the value of Pi. Pi is an irrational number---you can't write it down as a non-infinite decimal.

Find Circle Circumference To Diameter Latest News, Videos & Pictures on Circle Circumference To Diameter and see latest updates, news, information from NDTV.COM. Explore more on Circle ...

To do this, start by cutting a 3-inch piece of string to serve as the radius of the circle. What’s the radius? It’s half the diameter. Okay, but what’s the diameter?

Happy Pi Day! For decades, math lovers have been honoring this crucial irrational constant on March 14 (or 3/14, the first three digits of the ratio of a circle's circumference to its diameter ...

"Pi is the circumference of a circle whose diameter is 1," says Devlin. A circumference is the perimeter of a circle — "and pi is the first letter of the Greek word perimeter." ...