# Maths Problem - Which monitor is the biggest?

Discussion in 'Mathematics' started by shirtandtie, May 17, 2011.

1. ### shirtandtie

I went to the local computer store to buy a replacement monitor for my home PC.
My existing monitor is 19", that is to say the diagonal dimension is 19", and I am happy with this size.
There were two types of 19" monitors in the store; 'widescreen' ones with a 16:9 aspect ratio, and 'normal' ones with a 4:3 ratio. The second type were not as wide, but they looked bigger.
But which one was bigger? And how much bigger was it?

2. ### KarvolOccasional commenter

Forget about it being a maths question ( simple question on areas ) and go for the one which is more useful for you to work with.

3. ### MasterMaths

Depends on what you mean by "bigger" ... area? width? height?
I've done a couple of activities in the past where there is no right answer, and then given each group a point to "argue" and they must then see how the maths can back up their argument.
You can then set up a mini (not mass!) debate.

That aside ... do they still sell 4:3 monitors?!?!

4. ### Polecat

Is there some significance in 16:9 being the square of 4:3?
Just wondering.

5. ### Polecat

BTW, I forgot to add that it is now possible to get monitors that can be rotated by 90 degrees in the vertical plane. Apparently all you e-markers will benefit from such devices.
I expect you all knew that.

6. ### FlippantFlyer

Based on area you're correct, 4:3 is bigger. 4:3 are 15.2 x 11.4 giving approx 173 sq in and 16:9 are 16.56 x 9.31 giving approx 154 sq in. About 19 sq in more.

8. ### shirtandtie

Gone for the 4:3 (actually had to order it - difficult to find in a shop).
It's so much better, not because it's 12% bigger, (thanks to the above posters for that), at no significant extra cost, but because it's so much better for 'office' work.