This may be a specific number of decimal places or significant figures. The circumference of a circle is the distance around the shape. The circumference is the perimeter of the circle.

During the first celebration, the Exploratorium's employees marched around one of the circular spaces of the museum because Pi is the ratio of a circle's circumference to its diameter. It took ...

Pi, as we all learned in school (and are reminded every March 14, on Pi Day), is defined as the ratio of a circle’s circumference to its diameter. Denoted by the Greek letter π, this curious ...

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

Why Is Pi Day Celebrated on March 14? Pi is simply (well, it’s not really simple, but bear with me) the ratio of the circumference to the diameter of a circle. If you take a circle — any circle — and ...

Known around the world as "Pi Day," it’s a time to celebrate one of mathematics' most famous constants: Pi, the ratio of a circle's circumference to its diameter, approximately 3.1415.

The radius can be used to calculate a circle's diameter, area and circumference. Likewise, a sphere's volume is calculated from the radius. If you already know any of these figures, you can easily ...

was 1/50 of the great circle of the earth. By this means he found that the circumference of the earth was 250,000 stadia, according to Cleomedes, but Strabo says that it was 252,000 stadia.