Integral Issue (Y-Axis) Solve for Volume

[1joey1]

Integral Issue (Y-Axis) Solve for Volume :)

Homework Statement

[PLAIN]http://img88.imageshack.us/img88/7091/unled4mo.jpg

Homework Equations

V=
pi \int ^{18}_{0} 1/4 (19-y)^{2}dy

The Attempt at a Solution

I've tried it a couple times, gotten 243/2 Pi




Any and all help would be much appreciated :)

I'm really having trouble integrating the equation above, I am absolutely terrible with integrals so any help with that would be ideal

 

[lineintegral1]

There are two ways to integrate this (I'm not sure what would be easier for you). Try foiling out your expression or using a substitution. Can you be more specific as to what you are having trouble with?

You will certainly need to recall the power antidifferentiation rule for this problem.

 

[1joey1]

just googled that because i wasn't sure what it was.

https://pantherfile.uwm.edu/jrb5/www/antidiff1.htmlThanks, i'll try it with this new-found knowledge :)