(d) The following characteristics apply to a given disk pack with 10 platters (that is 18 recordable surfaces). Calculate the following Rotational Speed Transfer Rate Density per track Number of records in file to be stored Record size Block size Number of tracks per surface 10 ms 0.1 ms/track 21,000 bytes 200,000 records 180 bytes 10 logical records 500 (i) Number of blocks per track; (2 marks) (i) Waste per track