Pi Formulas

If you divide any circle’s circumference by its diameter, you’ll get the value of pi.

It cannot be written as an exact decimal as it has digits which goes on forever.

This way we can get the value of pi.

You can also use Π in the other way round to find the circumference of the circle.

How to calculate the Pi (π)

Π is a very useful symbol and has many uses.

Circumference = Π X Diameter

Diameter = Circumference / Π

Π = Circumference/ Diameter

Let’s see how to use it with an example.

Example of pi formula

Example: Tom measured 94 cm around the outside of a circular vase, what would be the diameter of the same?

Solution:

Diameter = Circumference / Π

= 94 cm / 3.14

= 29.936… cm

= 30 cm (approx)

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