00:01
In this problem, we're going to be finding out which of two tvs is bigger.
00:04
The traditional 4x3 aspect ratio or the lcd 16 by 9 aspect ratio.
00:13
To do this, we're going to be using the pythagorean theorem and the aspect ratio.
00:17
So our equation is going to look something like this.
00:20
4x squared plus 3x squared equals 50 squared.
00:29
Then we just have to square the 4 and square the 3.
00:32
Which gives us 16x squared plus 9x squared equals 50 squared.
00:41
Combine the like terms, which gives us 25x squared equals 50 squared.
00:48
We can simplify that 50 squared down to 2 ,500.
00:55
So we get 25x squared equals 25.
01:03
100, and then we divide the 25 over, and that gives us 100.
01:12
So we get x squared equals 100.
01:17
Take the square root, and x equals 110.
01:23
Sorry.
01:25
So now we can use this number that we just found this ratio to figure out what the area of the tv is...