<image>(2011 Spring • Quangang District School Monthly Exam) The school's biology group has a rectangular experimental field that is 32 meters long and 20 meters wide. For the convenience of management, they plan to open a path of equal width along both directions parallel to the sides.
(1) The total area of the rectangular experimental field is ____ square meters;
(2) Let the width of the path be x meters, then the area of the path is ____ square meters (expressed as an algebraic expression containing x);
(3) To make the planting area 540 square meters, what should the width of the path be?