The center is conducting the study mentioned in the essay. Successful 5th graders learn that the circumference of a circle is equal to pi times the circle’s diameter: c = pi x d.

Learn about the definition of pi in relation to a circle with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

It asks you to find the circumference of a circle. In order to do so you first have to find the circle's diameter through the use of an isosceles triangle.

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 ...

What Is a Circle? My favorite way to define a circle is in terms of how to draw one. In the episode What Is Pi? we learned how to draw a circle arts-and-crafts style. To do this, start by cutting ...

You draw a circle. From that circle, you can determine both the circumference and the radius. Then the value of pi would be the circumference divided by twice the radius. Simple, right?

Yes, this is essentially the same equation used to find the circumference of a circle if θ is measured in radians (which it should be).

National Pi Day is held each year on March 14. It honors 3.14 the ratio of the circumference of a circle. You can also get deals on food too.