Paper sizes explained | Number Hub with Matt Parker | Head Squeeze

Uploader: BBC Earth Lab

Original upload date: Tue, 05 Nov 2013 00:00:00 GMT

Archive date: Wed, 03 Nov 2021 23:30:41 GMT

Have you ever wondered why A4 is the way it is? Well Matt Parker has sorted it all out for you. Two A4's side by side make an A3. Two A3's side by side make an A2. Two A2's together make an A1 and t
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