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Why Pi (Size: 42.24 MB)
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***International Pi Day Special***
Why Pi? English | 89 Pages | HQ PDF This entertaining follow-up to DK's popular Go Figure!, Why Pi? presents even more mind-bending ways to think about numbers. This time, author Johnny Ball focuses on how people have used numbers to measure things through the ages, from the ways the ancient Egyptians measured the pyramids to how modern scientists measure time and space. Sharing Widget |