Okay, I believe you, π is a number. It may not be a number as I am used to working with numbers, but it represents an irrational number that starts with the digits 3.1415 and then continues on indefinitely. Even more important than knowing the exact value of π is recognizing that π is a constant that turns up when investigating the geometry of a circle.
Any circular shape has a diameter, or distance across. That diameter is consistently related to its circumference. No matter how large or small you make a circle, if you measure the circumference of the circle and then measure its diameter, you will find that two measurements are related. In fact, the Diameter of a circle times π equals the circumference of the circle. Neat, huh!
Here's a really great video about the history of π
Any circular shape has a diameter, or distance across. That diameter is consistently related to its circumference. No matter how large or small you make a circle, if you measure the circumference of the circle and then measure its diameter, you will find that two measurements are related. In fact, the Diameter of a circle times π equals the circumference of the circle. Neat, huh!
Here's a really great video about the history of π
Perhaps if you celebrate pi day, you might like to try cutting π this year!
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