Sonja wants to cover the rectangular floor of her closet with tile. The floor is 2 1/2 feet by 3 1/2 feet. She wants to use the fewest tiles possible and doesnt want to cut any times. The tiles come in three sizes: 1 foot by 1 foot, 1/2 foot by 1/2 foot, and 1/4 foot by 1/4 foot. Choose the tile that sonja should use. What is the area of the closet floor?