How do i check the aspect ratio? Is it by resolution? If so what is the aspect ratio of 2560 x 1440?

Edit
Checked the first page it was listed as 16:9. Anyhow is there a way to calculate the aspect ratio based on the resolution? Thanks

Ps.
I'm looking for a 27" 16:10 LED IPS monitor. Is there any such monitor? Thanks

This post has been edited by Archaven: Oct 31 2012, 12:42 PM