If a stone pyramid with a 5 degree slope were built 100 miles high, would it stand without collapsing?

3 Answers

  • 8 months ago

    Not likely.

    The side length of said pyramid would be nearly 2300 miles. Not even remotely feasible.  The massive weight would crush the stones at the bottom, making it very unstable.

    For comparison:

    The tallest man made structure (Burj Khalifa) is just a little over 1/2 mile high.

    Mt. Everest is less than 5.5 miles tall.

    Kola Superdeep Borehole, the deepest hole is 7.62 miles

    The highest flying air breathing aircraft (SR-71) tops out at well under 20 miles.

  • 8 months ago

    I would think so.  The 5º slope is on each side, so the sides of the pyramid support each other.

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