The Mathematics Behind A4 Paper - Why is A4 Sized This Way?

Описание: Have you ever wondered why A4 paper is the size it is or how it relates to A3 paper and other A-Series paper sizes? In this video we look at how A-series paper sizes are related to each other, how they were originally defined and what links the sizes of their edges. Use mathematics to discover the ratio between length and width, and how this relates to the Fibonacci spiral.
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