The circumference of a circle is the distance around the shape. The ability to round a number to a number of decimal places or to a number of significant figures means that answers can be written to ...

Pi is a very long and a very important number, but how many decimal places of it do we really need to know? Dr Karl investigates. In the land of food, a pie is something from an oven that is usually ...

There is Pi all around us, in ways you may not have seen before. If you remember from school, Pi is the ratio of a circle's circumference to its diameter. It is a number that is usually written as ...

Sunday, March 14 is "Pi Day", a celebration of the approximate ratio of the circumference of a circle to its diameter, Pi Day was recognized by Congress in 2009 as well as the United Nations. Locally ...