All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Logic
So obvious....? (Posted on 2003-02-19) Difficulty: 3 of 5
Why do you think manholes are round in shape?

(You need to think a little crooked for this )

See The Solution Submitted by Anoop    
Rating: 3.3636 (11 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(6): A solution | Comment 18 of 37 |
(In reply to re(5): A solution by levik)

Whether the triangle could fall through (or could be fitted through deliberately) would depend on the overall size of the triangle, the width of the lip (how much narrower the hole is than the cover) and the thickness of the cover. A triangular cover with side length of 36 inches would have an altitude of under 31.2 inches. The length of one side of the hole would be 36 - 2(√2) or over 32.5 inches, permitting the cover to fit through if it is presented as its altitude. Of course to allow for the thickness of the cover, we'd have to consider the portion of the hole even farther from the edge, which is even smaller, but that depends on the thickness of the cover. A larger than 36-inch side would allow greater thickness for the given lip width, and a smaller than 1-inch lip would also allow for a greater cover thickness.
  Posted by Charlie on 2003-02-21 04:49:40

Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (2)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information