the height of a television screen is 12 inches. If the diagonal of the television screen is 20 inches what is the width of the screen

Question

plz solve

Answer 1

Gri-

It helps if you draw out what you have.  It ends up that you are looking at a right triangle, with the hypotenuse equal to 20 and one of the legs equal to 12.  Remember the Pythagorean Theorem?

c² = a² +b²

20²= 12²+b²

400 -144 = b²

256 = b²

16 = b

Answer 2

12² + w² = 20²

144 + w² = 400

w² = 256

w = 16

 

The width of the screen is 16 inches.