Manholes

Why are manholes round?

Because it is impossible for the covers to drop inside the holes, no matter how you position them on top. Also, when they have a circular shape, they are easier to roll.

Puzzle Prime

+ latest posts

Puzzle Prime is tirelessly looking all around the internet to find the very best puzzles and bring them all to puzzleprime.com.

• Puzzle Prime

  https://www.puzzleprime.com/author/puzzle/

  The Boat
• Puzzle Prime

  https://www.puzzleprime.com/author/puzzle/

  Perfect Day
• Puzzle Prime

  https://www.puzzleprime.com/author/puzzle/

  Puzzle Tournament 2
• Puzzle Prime

  https://www.puzzleprime.com/author/puzzle/

  Google Doodle