School-Safe Puzzle Games

Practical roadside puzzle

This real-world puzzle comes courtesy of www.rinkworks.com:

Why is it better to have round manhole covers than square ones?

Feel free to post the answer in the comments section if you think you know it

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4 Comments to “Practical roadside puzzle”


  1. Jared | Guest

    Well it is because a circle is the only shape that can’t be twisted and fall through. A square an be turned sideways, and dropped through diagonally an oval again can be turned upright.


  2. RLP | Profile

    You’re right about the square, and the oval too. Thanks for stopping by, Jared


  3. Mark | Guest

    A round man hole cover can be rolled easily into place


  4. sophie | Guest

    round will never fall in


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