00:01
Given the length of the cord is 24 and the radius is 13, we want to find the vertical piece of x.
00:08
Well, 13 is the radius.
00:09
You could also draw the radius here, and then this is 12.
00:15
And so i'm going to blow this up over here.
00:17
What we've got here is a right triangle with a hypotenuse 13 and a leg of 12.
00:22
And we want to find x with the pythagorean theorem, x squared plus 12 squared is equal to 13 squared.
00:29
So x squared plus 144 equals 1 .4.
00:32
169, subtract 144 and x squared equals 25.
00:36
Take the square root and that means x is equal to 5.
00:44
And the next question we want to find x.
00:47
It's the radius...