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## Did you know?

### Pyramids and pi

The Great Pyramid at Giza, constructed c. 2589–2566 BC, was built with a perimeter of about 1760 cubits and a height of about 280 cubits; the ratio 1760/280 ? 6.2857 is approximately equal to 2? ? 6.2832.

Based on this ratio, some Egyptologists concluded that the pyramid builders had knowledge of ? and deliberately designed the pyramid to incorporate the proportions of a circle.

Others maintain that the suggested relationship to ? is merely a coincidence, because there is no evidence that the pyramid builders had any knowledge of ?, and because the dimensions of the pyramid are based on other factors.

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Daily Maths Topic Today - pyramids and pi.