Screen width/height from diagonal size?

Soldato
Joined
14 Oct 2004
Posts
5,216
Location
location, location
Pythagoras' Theorum m'boy.

Width squared + height squared = diagonal squared

Using this, and the height to width ratio (e.g. 16:9) you can work out the visible area.

16 squared = 256
9 squared = 81
256 + 81 = 337

square root of 337 = 18.358

37 / 18.358 = 2.015

16 x 2.015 = 32.24
9 x 2.015 = 18.14

So, there you have it.
A 37", 16:9 screen has a visible area of 32.24" x 18.14".

Hav
 

Mud

Mud

Soldato
Joined
13 Dec 2004
Posts
3,186
Location
Bristol
Pythagorus says A^2 + B^2 = C^2...and you know C^2 = 37" and the ratio of A: B, thats all you need.

16:9 screen so:
(16x)^2 + (9x)^2 = C^2
then once you know what x is, 16x is the width, 9x is the height.

So for 37" screen you're looking at 32.2"x18.1"

edit: beaten :o
 
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