After filling the first sandbox to a height of 6 inches, the groundskeeper had 24 cubic feet of sand left over. She used all the leftover sand to fill the second sandbox. The second sandbox has a base in the shape of a rectangle. The base of the second sandbox has a perimeter that is less than 35 feet. The groundskeeper filled the second sandbox to a height of 6 inches. What could be the length and width, in feet, of the second sandbox? Show or explain how you got your answer.