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A hard disk of 2 0 sectors per track and 4 0 0 tracks per surface in 1 5 double - sided platters disk, and

A hard disk of 20 sectors per track and 400 tracks per surface in 15 double-sided platters disk, and platters rotates at a speed of 2400 RPM with average seek time 30 ms. Each sector contains a block of size 512 bytes and gap size between blocks 128 bytes. What is the total useful capacity of a track?
Select one:
a.8 KB
b. none
c.12.5 KB
d.4.096 KB
e.10240 Bytes

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