Question

a flat screen television is advertised as being 34 inches on its diagonal. if the tv is 15 inches tall, then how wide is the screen?

Answer 1

30.5 in

Explanation:

Think of the 34 in diagonal as the hypotenuse of a right triangle with a leg of 15 in. Find the missing leg (the width) by using the Pythagorean theorem.

w = width of the TV

34² = w² + 15²

w² = 34² - 15² = 1156 - 225 = 931

w = √931 ≈ 30.5