Module 1 (M1) - Geometry & Measures - Circumference and area of circles. Part of Maths M1: Geometry and measures. Save to My Bitesize Save to My Bitesize Saving Saved Removing Remove from My Bitesize.

It is derived simply, by dividing the circumference of a circle by its diameter, or π = C/d, but the result is a never-ending "irrational" number: 3.14159265. Check out this visual demonstration ...

Using geometry, he calculated the circumference of Earth based on a few things that he knew (and one he didn’t): He knew there are 360 degrees in a circle.

In the same math textbook, Allen talks about the formula for right circular cylinder, which is used to measure volume (145). And you use that formula to measure the volume of the hockey puck. Volume = ...

The question below is a geometry question from the ACT that students often have a hard time solving. It asks you to find the circumference of a circle.

For this reason, 17th-century mathematician William Oughtred used π to denote the “periphery,” or the circumference of any given circle—a value that changed as the circle changed.