Question: currently serving a request at cylinder 1 4 3 , and the previous request was at cylinder 1 2 5 . The queue of pending

currently serving a request at cylinder 143, and the previous request was at cylinder 125. The queue of pending requests, in FIFO order, is 86,1470,913,1774,948,1509,1022,1750, and 130. Starting from the current head position, examine the total distance (in cylinders) that the disk arm moves

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