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Given a question with z Byte track size x Byte sector size and R rpm

IO time = seektime + latency time + transfer time .

How to calculate the last part ? transfer time ?

Q2 )
if no method to calculate sector size , then how do I calculate transfer time ? Given D Data Transfer Rate

Q3 )
if no method to calculate sector size , then how do I calculate transfer time ? NO Data Transfer Rate rate also given
in Operating System
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