GATE Mechanical Engineering (ME) 2012 Solved Paper

A CNC vertical  milling machine has to cut a straight slot of 10 mm width and 2 mm depth by a cutter of 10 mm diameter between points (0,0) and (100, 100) on the XY plane (dimensions in mm). the feed rate used for milling is 50 mm/min milling time for the slot (in seconds) is