Why Does the Number π Appear in So Many Places?

Examples

1. Rolling a bicycle wheel covers a distance equal to its circumference, that’s π times its width.
2. A pizza has curved edges, which are calculated using π.
3. When you throw a stone into water, the waves ripple in circles, and π is behind those ripples.

More examples

See also

• How Does a Clock Work?
• What Makes Some People Better at Math Than Others?
• Why Is the Shape of a Pizza So Perfect?
• Who is Fundamental Theorem of Arithmetic?
• What Makes a Coin Flip Fair?

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