One yard is equal to three feet, so I can divide each dimension by three to get the equivalent in yards. 12 feet divided by 3 is 4 yards, and 6 feet divided 3 is 2 yards. Now I have the length and width of the room in yards, and I can multiply them to get the area in square yards. 4 times 2 is 8, so the room has an area of 8 square yards. Therefore, I need 8 square yards of carpet to cover the floor of the room. 
A rectangular room measures 12-feet by 6-feet. How many square yards of carpet are needed to cover the floor of the room?