- #1
transgalactic
- 1,395
- 0
in this solution:
http://i39.tinypic.com/2e4w7f4.gif
they chose thivkness to be dr
althogh r is the radius of a sub cilinder.
??
http://i39.tinypic.com/2e4w7f4.gif
they chose thivkness to be dr
althogh r is the radius of a sub cilinder.
??