perplexus.info :: Calculus : Hole in a bead

Hole in a bead (Posted on 2004-08-21)

A round hole is drilled through the center of a spherical solid with a radius (r). The resulting cylindrical hole has height 4 cm.

a)What is the volume of the solid that remains?

b)What is unusual about the answer?

Submitted by Pieater

Rating: 3.0909 (11 votes)

Solution: (Hide)

a)32pi/3
b)it is independent of r(hmmm?)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
The Aha! solution	Jeff Kalwerisky	2006-05-16 09:14:36
re: Clever problem.	Jud	2005-08-16 13:26:56
No Subject	Osi	2004-11-05 09:36:31
Try This	CeeAnne	2004-10-22 07:31:07
easy as pi	willow cliffswallow	2004-09-16 14:51:12
Pythagorean Theorem	Bob Marsh	2004-08-24 03:55:29
Segmentation, not calculus	nikki	2004-08-23 10:45:33
re: ???	np_rt	2004-08-21 10:37:53
???	Vee-Liem Veefessional	2004-08-21 10:21:08
Clever problem.	Bractals	2004-08-21 10:00:48
Solution (given my assumptions)	Larry	2004-08-21 09:49:55
re: Question about the givens	SilverKnight	2004-08-21 08:45:12
Question about the givens	Larry	2004-08-21 08:35:55

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info