10" tall? I think your math is off.
My monitor is P2175Q. Dimension with bezel 25.2 x 16.7. LCD alone is 23.5 x 13.25".
How? Have you verified it? √(625+100) = ~26.9
You brought the measurements of your 16:9 : yes, one of the points was that a 27'' diagonal with a 25'' side cannot be 16:9, and is in fact more like 5:2, as written. Going from 25'' to 23.5'' makes a lot of difference in proportions.
