Why do you think manholes are round in shape?

(You need to think a little crooked for this )

If you take any other shape of the manhole, manhole covers can easily fall down. Any polygon you take has a diagonal which is longer than any of the individual sides. This could be risky and dangerous. Whereas a circular manhole has an uniform diameter, whichever way you move it.

Posted by Gautam on 2003-02-19 13:59:40