A body of soldiers form a 50m-by-50m square ABCD on the parade ground.

In a unit of time, they march forward 50m in formation to take up the position DCEF.

The army's mascot, a small dog, is standing next to its handler at location A. When the soldiers start marching, the dog begins to run around the moving body in a clockwise direction, keeping as close to it as possible. When one unit of time has elapsed, the dog has made one complete circuit and has got back to its handler, who is now at location D (assume the dog runs at a constant speed and does not delay when turning the corners).

 B----C----E
 |    |    |   
 A----D----F

How far does the dog travel?

(In reply to i think this is the answer by Victor Zapana)

the dog has to go atleast 200 m. thats the perimeter of the body of soldiers.

Posted by rerun141 on 2004-01-03 13:36:07