A disk has 8 equidistant tracks. The diameters of the innermost and outermost tracks are 1 cm and 8 cm respectively. The innermost track has a storage capacity of 10 MB.
If the disk has 20 sectors per track and is currently at the end of the 5th sector of the innermost track and the head can move at a speed of 10 m/sec and it is rotating at constant angular velocity of 6000 rpm, how much time will it take to read 1 MB contiguous data starting from the sector 4 of the outer most track?