December 11th, 2012, 03:31 PM  #1 
Newbie Joined: Sep 2011 Posts: 29 Thanks: 0  Different axes of revolution
My program is to find the volume of the solid generated when y = x^2 bounded by y = 4, and x = 0 and revolved about the line y = 2... When they say it has a different axes of revolution do they mean they move the curve or do they mean the solid has a hole in it or what? 
December 11th, 2012, 03:35 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,155 Thanks: 462 Math Focus: Calculus/ODEs  Re: Different axes of revolution
This particular solid will have a hole in it.

December 11th, 2012, 04:02 PM  #3 
Newbie Joined: Sep 2011 Posts: 29 Thanks: 0  Re: Different axes of revolution
Thanks for the quick reply.

December 12th, 2012, 02:32 PM  #4 
Newbie Joined: Sep 2011 Posts: 29 Thanks: 0  Re: Different axes of revolution
Ok I have worked a couple of problems of these and I am not seeing how they get this answer for this particular problem I understand the x^2 + 2, a left shift, but where does that 36 come from? 
December 12th, 2012, 05:44 PM  #5 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,155 Thanks: 462 Math Focus: Calculus/ODEs  Re: Different axes of revolution
For an arbitrary washer, the outer radius is the distance between y = 4 and y = 2, which is 6 units. The square of this is 36.

December 13th, 2012, 04:37 AM  #6 
Newbie Joined: Sep 2011 Posts: 29 Thanks: 0  Re: Different axes of revolution
You are an asset to this forum. I got it now thanks. 

Tags 
axes, revolution 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Translation and Rotation of Axes Problem  shiseonji  Algebra  2  March 14th, 2014 03:56 AM 
Integration  Finding area between curve and axes  mathomaniac  Calculus  1  May 3rd, 2013 10:31 AM 
I need help w/ Shapes Parallel to Axes (volumes by slicing)  R31gnofph3r  Calculus  3  November 29th, 2012 04:06 AM 
Axes of rotational Symmetry of a truncated cube  Galux  Algebra  2  September 27th, 2012 12:36 PM 
rotation of axes question  ehh  Algebra  3  August 6th, 2012 01:22 PM 