According to Red Book specifications, a standard CD is 120 mm (4.75 inches) in diameter and 1.2 mm (0.05 inches) thick
A standard CD is 4.75 5 inches rounded in diameter.
CD's have a diameter of 5.5 centimeters;)
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It is the same like a normal CD. It's 12 cm, or 120 mm.
A standard CD:- 15mm Internal diameter, 120mm external diameter, 1.1 mm thick A mini CD:- 15mm Internal diameter, 80mm external diameter, 1.1 mm thick
Because it must hold all of Beethoven's 9th symphony.
Standard CDs have a diameter of 120 mm
Generally 115mm Diameter CD ( that is ordinary CDs ) play for 74 minutes. This is the standard time for CDs that are in use nowadays.
A standard CD disk is 12 cm, the size of a CD Box would have to be bigger to fit the standard size, but there are so many different styles of CD Boxes to give a correct measurement here.
327mm ;)
A 30mm diameter would be roughly the size of a US half-dollar coin, which has a diameter of 30.61mm. It is slightly smaller than the diameter of a standard ping pong ball (40mm) and about half the diameter of a standard CD (120mm). In terms of everyday objects, it is similar in size to a large marble or a typical wine cork.
The diameter of a CD is 11.43 so the radius is 5.715.