# Triple integral in cylindrical coordinates

1. Homework Statement
I am trying to solve a triple integral using cylindrical coordinates. This is what I have to far . But I think I have choosen the limits wrong.

## The Attempt at a Solution

[/B]

LCKurtz
Homework Helper
Gold Member
1. Homework Statement
I am trying to solve a triple integral using cylindrical coordinates. This is what I have to far . But I think I have choosen the limits wrong.

## The Attempt at a Solution

[/B]

Assuming your first line is correct, your change to cylindrical coordinates is almost correct. The only change I see you need is to remember that the element of volume in cylindrical coordinates is ##r~dz~ dr~ d\theta##. You forgot the ##r##.

Assuming your first line is correct, your change to cylindrical coordinates is almost correct. The only change I see you need is to remember that the element of volume in cylindrical coordinates is ##r~dz~ dr~ d\theta##. You forgot the ##r##.
yes that was what I was missing !