My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
September 19th, 2007, 05:50 AM   #1
Newbie
 
Joined: Sep 2007

Posts: 17
Thanks: 0

the sphere and the circles

hello, i need a help with this example:

imagine a sphere and X circles with same diameter and origins. into how much (the most and the least ) X parts can be the sphere divided by the X number of circles?

thank u.
1210 is offline  
 
September 19th, 2007, 12:18 PM   #2
Senior Member
 
Joined: Dec 2006

Posts: 1,111
Thanks: 0

I'm not sure I get what you're saying. Could you re-state the problem with more description?
Infinity is offline  
September 19th, 2007, 10:41 PM   #3
Newbie
 
Joined: Sep 2007

Posts: 17
Thanks: 0

it is hard to say it another way. but i hint is that is rather teoretical example than practical..it means you dont count with any particular number, but this solution have to right for any number of circles.. (the solution has to be something like 2x where the x is number of circles and 2x is the value into how many parts is the sphere differentiated by that circles, eg. if you have one circle (x) you van divide sphere with that circle into two parts (2x) ). actually i dont know if this is the right answer.
1210 is offline  
September 20th, 2007, 04:03 AM   #4
Senior Member
 
Joined: Dec 2006

Posts: 1,111
Thanks: 0

OK, I see what you mean by dividing a sphere into parts using circles, but what didn't make any sense to me was why all the circles have the same diameter. Unless maybe they are just being treated like planes in space, but then why are they even circles? I would think that the circles would have a steadily decreasing diameter, so that they could cut the sphere through at different points.
Infinity is offline  
September 21st, 2007, 08:21 PM   #5
Global Moderator
 
Joined: Dec 2006

Posts: 19,723
Thanks: 1807

All the circles and the sphere have the same diameter.
skipjack is online now  
September 22nd, 2007, 05:06 AM   #6
Senior Member
 
Joined: Dec 2006

Posts: 1,111
Thanks: 0

Quote:
All the circles and the sphere have the same diameter.
True, but then what are we supposed do to with the circles?
Infinity is offline  
September 22nd, 2007, 09:15 AM   #7
Global Moderator
 
CRGreathouse's Avatar
 
Joined: Nov 2006
From: UTC -5

Posts: 16,046
Thanks: 938

Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms
Quote:
Originally Posted by Infinity
Quote:
All the circles and the sphere have the same diameter.
True, but then what are we supposed do to with the circles?
Picture lines of longitude dividing up the globe,then rotating some so they were still on the surface of the Earth but not going north-south anymore. Twist them until you divide up the Earth into the appropriate number of pieces. (1210, this is what you had in mind, yes?)
CRGreathouse is offline  
September 22nd, 2007, 12:45 PM   #8
Senior Member
 
Joined: Dec 2006

Posts: 1,111
Thanks: 0

Ah, I see what you're getting at now.
Infinity is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
circles, sphere



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
3-sphere flipg Algebra 4 December 8th, 2012 03:08 PM
RiDo Circles. Sin & Cos Circles RiDo Algebra 2 June 21st, 2012 01:31 AM
Sphere SENG Math Events 2 November 14th, 2008 04:41 AM
Sphere milin Advanced Statistics 12 September 17th, 2007 01:59 PM
Sphere Soha Algebra 6 December 27th, 2006 10:18 AM





Copyright © 2018 My Math Forum. All rights reserved.