# please check my work - volume around the y-axis... URGENT

• Mar 21st 2007, 05:56 PM
ashley9
please check my work - volume around the y-axis... URGENT
the problem is to find the volume of revolution around the y-axis of x=y^2+6 and x=6. here is my work:

http://img253.imageshack.us/img253/5151/calcprobgn1.jpg

i think it's wrong, so if somebody could please explain how to do it correctly and what the right answer is, it'd be great. :)
• Mar 21st 2007, 06:57 PM
Jhevon
Quote:

Originally Posted by ashley9
the problem is to find the volume of revolution around the y-axis of x=y^2+6 and x=6. here is my work:

http://img253.imageshack.us/img253/5151/calcprobgn1.jpg

i think it's wrong, so if somebody could please explain how to do it correctly and what the right answer is, it'd be great. :)

are you sure those equations are right?
• Mar 21st 2007, 07:06 PM
ashley9
ah, no, i typed it wrong. the equations are x=y^2 +2 and x=6. please help...i need this done tonight ;)
• Mar 21st 2007, 07:50 PM
ecMathGeek
Quote:

Originally Posted by ashley9
ah, no, i typed it wrong. the equations are x=y^2 +2 and x=6. please help...i need this done tonight ;)