30" and 24" Monitor Dimensions

I've been looking to either get 2 more 24" monitors or one 30". There are great advantages to each monitor. For gaming the 30" is much better, however for business (internet, spreadsheets, etc.), video editing 2 24" are much better. As I have nothing better to do with some of my spare time, I am wondering if anyone has measured out the actual viewing area of their 24" or 30" monitor height and width.

If you have please list the dimensions you have measured on your widescreen 30" and/or 24" monitor.

Thanks!

Right so the diagonal of a 24" and 30" is exactly what it sounds, but all the websites that offer monitors only tell of the physical monitor dimension, which usually includes the stand, I want to know the height and width of any typical 24" and 30" viewing area. The Apple, Dell, Samsung, etc. monitors

SO.... I was able to find the exact measurements of a Dell 24" monitor, the 2407. It measures Width(12 3/4) by Height(20 1/2) in inches. This is the actual viewable screen, it doesn't include the stand nor the monitor housing along the edges.

If someone could find the measurements of a 30" that would be most helpful.