I've seen a TV comercial that says
Our 60 inch TV have 20% more "visible area" than a 55 inch TV.
I'm curios to know if it's real or not? I need to know formula for relation between rectangle diameter and area then calculate difference between 55 and 60 inch TV.
A wide screen TV have an aspect ratio of
Answer can be more general to say how much visible are we get for any given one inch on a wide screen TV.
This is a super simple question. I hope it is not out of this site context.