You have shown that the circumference of a circle is π × diameter. Image caption, TIP: Try it with any circular object. Whatever the size, the circumference is always just over 3 × diameter.

I'm kind of confused by your question. Do you want a circle with a circumference of 1px or a circle with a 1px border?<BR><BR>The former sounds difficult, but for the latter, you can use the ...

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 ...

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.