Which statements about the area of this rectangle are true? Choose each correct answer. There are 27 unit squares covering the rectangle. The area of the rectangle is 27 square inches. Each unit square has a length of 1 inch. The area is measured in inches. There are 27 unit squares covering the rectangle. The area of the rectangle is 27 inches. Each unit square has a length of 1 inch. The area is measured in square inches. inch inch.​