it is 5 .5 centermeters long exactly
The diameter of the hole in the center of a standard compact disc (CD) is approximately 15 millimeters, which is about 0.59 inches in imperial units. This central hole allows the CD to be mounted on a spindle during playback.
None, because it is a hole!
There's no dirt in it since it's a hole.
Anything from infinitesimal to infinite depending on how long the hole is!
There is no dirt in a hole
tecnolgy
The hole in the CD is where the machine you put it in "grips" the CD so the disk can be spun and thus read and used.
So they don't fall out of the CD player
The small hole at the center of a CD is called the "spindle hole" or "hub hole." This hole allows the CD to be securely attached to the spindle of a CD player or drive so that it can be properly read and played.
On the face of the cd player, look for a small hole. With the power off, insert a paperclip in the hole, turning the gears to push the cd out of the player.
most CD drives have a tiny hole near where the CD goes in, just stick something in the hole, like a paperclip or something. Push it into the hole and it will force the CD out. It might not have the hole, I think only computer style CD drives have it.
CD's have a diameter of 5.5 centimeters;)
cd cd cd
No
no but if it is in the middle of you computer when you put it in you CD drive yes
15mm (1.5cm).
A small ball with a hole in the middle is probably a Bead.