STEP 1 - WRAP RIBBON: Take the ribbon and wrap it around a glass. Mark where the ribbon overlaps itself. Image caption, STEP 2 - CUT CIRCUMFERENCE: Cut the ribbon at the point where it overlaps.

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 ...

SAN FRANCISCO -- Every March 14, mathematicians, scientists and math lovers around the world celebrate Pi Day, a commemoration of the mathematical sign Pi. That's because the date written ...

Friday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its ...

What is irrational, contains more than 200 trillion digits, and shares a special day with Steph Curry’s birthday? A middle ...

Pi can calculate the circumference of a circle by measuring the diameter — the distance straight across the circle's middle — and multiplying that by the 3.14-plus number. It is considered a constant ...

March 14 is commonly referred to as National Pi Day, a day that celebrates the ratio of the circumference of a circle. The holiday is not just a fun pun on the mathematical π value 3.14, but also ...

Pi is a Greek symbol used in math equations representing the ratio of the circumference of a circle to its diameter, ...