Posted by **Celina** on Wednesday, March 9, 2011 at 9:52pm.

I need some help with this specific question. In a computer catalog, a computer monitor is listed as being 19 inches. This distance is the

diagonal distance across the screen. If the screen measures 10 inches in height, what is the

actual width of the screen to the nearest inch?

* I'd appreciate if I not only got an answer but an explanation too. Thanks :]

- Mathematics . -
**bobpursley**, Wednesday, March 9, 2011 at 9:55pm
Use the Pythagorean theorem?

d^2=h^2+w^2

19^2=10^2+w^2

- Mathematics . -
**Celina**, Wednesday, March 9, 2011 at 9:56pm
But how would you do it using

A^2 + B^2 = C^2 ?

- Mathematics . -
**bobpursley**, Wednesday, March 9, 2011 at 10:16pm
Lord. It is the same thing. Letters don't matter.

diagonal^2=height^2 + width^2

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