Question

what is the size of CD
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Answer 1

Answer:

120 millimetres

Standard CDs are available in two sizes. By far, the most common is 120 millimetres (4.7 in) in diameter, with a 74- or 80-minute audio capacity and a 650 or 700 MiB (737,280,000-byte) data capacity.

Answer 2

Answer:

Capacity: Typically up to 700 MiB (up to 80 minutes' audio)