In an attempt to save effort, Verča decided to automate mowing her lawn. She firmly planted a pole in the center of the lawn and attached the lawnmower to it with a rope. The mower can move and cut only forward, but due to the rope winding around the central pole, its path will form a spiral, allowing it to cut an approximately circular area around the pole. What radius must the pole have so that the rope winds in such a way that the cut strips perfectly align with each other? The mower cuts strips of grass 0.75m wide; neglect the thickness of the rope.