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

Home > Shapes
3D Engineering problem (Posted on 2006-08-02) Difficulty: 3 of 5
1. What 3D objects are represented by a pair of concentric circles in its plan (viewed from above) and a pair of concentric circles for its front elevation (vertical face)?

2. What would a #1 object be if it also has a side elevation that is concentric squares [with corner diagonals]?

No Solution Yet Submitted by Salil    
Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: part 1 solution; thoughts on part 2 | Comment 2 of 16 |
(In reply to part 1 solution; thoughts on part 2 by Charlie)

I see a problem with your solution to part 1.  Consider the horizontal hole in plan view (or the vertical hole in front elevation view).  The outer circle in the drawing would have arcs cut off and replaced with straight lines (chords of the outer circle) where that hole meets the sphere.  (Easy to visualize if you picture a very large diameter hole with respect to the sphere's diameter.) 

Also, the drawing should show dotted lines where that hole goes through the sphere, shouldn't it?

I haven't even thought about part 2.  :-)

  Posted by Ken Haley on 2006-08-03 00:38:13
Please log in:
Remember me:
Sign up! | Forgot password

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

Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information