pythagorean theorem

Question

a computer screen is listed as 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

Answer 1

In the Pythagorean Theorem:

 

a² + b² = c²

 

a and b are the measures of the two legs, individually, and c is the measure of the hypotenuse.

 

In this case the hypotenuse is 19 inches and one leg is 10 inches, so we can plug in like this:

 

10² + b² = 19²

 

and then solve for b:

 

100 + b² = 361

b² = 261

b = 16.155