Screen area for 20", 21.5" and 24" imac's?

yojimbo1 · Oct 22, 2009

Can someone please figure out the total screen area (in square inches) of the 20", 21.5" and the 24" imac.

I understand that the aspect ratio has changed from 16:10 to 16:9, but I'm not sure how this affects the total amount of screen "real estate"

senseless · Oct 22, 2009

Very good point. Widescreen specs vs 4:3 read bigger, but may not be.

Ganesha · Oct 22, 2009

yojimbo1 said:
Can someone please figure out the total screen area (in square inches) of the 20", 21.5" and the 24" imac.

I understand that the aspect ratio has changed from 16:10 to 16:9, but I'm not sure how this affects the total amount of screen "real estate"

x^2 + y^2 = h^2

Want: xy

For 16:10

16x=10y
y = (16/10)x
xy = (16/10)x^2

h^2 = x^2 + y^2
h^2 = x^2 + (16/10x)^2
h^2 = x^2 + (256/100)x^2
h^2 = (356/100)x^2
x^2 = (100/356)h^2

xy = (160/356)h^2

xy(24) = ~258.88

For 16:9

xy = (324/801)h^2

xy(21.5) = ~186.98
xy(27) = ~294.88

Disclaimer. I did not check my work.

avihappy · Oct 22, 2009

yojimbo1 said:
Can someone please figure out the total screen area (in square inches) of the 20", 21.5" and the 24" imac.

I understand that the aspect ratio has changed from 16:10 to 16:9, but I'm not sure how this affects the total amount of screen "real estate"

20 inch 16:10= 179.77 square inches
21.5 inch 16:9= 197.51 square inches
24 inch 16:10= 258.87 square inches
27 inch 16:9= 311.50 square inches

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Screen area for 20", 21.5" and 24" imac's?

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