Pyramid of pennies
A video is shown of a pyramid being made from pennies. How many pennies does it take to make the pyramid?
Further information is given on the pyramid; there are 13 pennies in a stack, the base layer is 40 by 40, and the dimensions of a penny. There is also a formula for calculating how many stacked spheres are in a pyramid with a square base.
A screen grab shows the completed pyramid with the answer revealed. There is also a press release relating to the pyramid.
If I have one million pennies, what kind of pyramid can I make?
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