Question

34A Blipco television has a rectangular screen with a diagonal measurement of 25 inches. If the screenhas a height of 15 inches, what is the width of the screen?

Answer 1

Let's quickly draw the television screen

We'll focus on the following triangle, in which we can use Pythagoras's theorem to calculate the lenght of the missing side

We know

`hyp^2^{}=b^2+h^2`

Where b and h are the sides that form the right angle. In this case

`625=b^2+225`
`b^2=400`
`b=20`

And so, the width of the screen is 20 inches.