A cylindrical cistern, constructed below ground level is 3.0 m in diameter and 2.0 m deep and is filler to the brim with a liquid whose index of refraction is 1.5. A small object rests on the bottoms of the cistern and at its center. how far from the right edge of the cistern can a girl whose eyes are 1.2 from the ground stand and still seee the object?