For this case, the first thing you should do is find the area of the room. We can assume that the room is a rectangle, then the area will be: A = (w) * (l) Where, w: width l: long Substituting the values we have: A = (16) * (20) A = 320 feet ^ 2 We note that each carpet covers only 4 feet ^ 2. Therefore the number of carpets will be: N = (320) / (4) N = 80 Answer: andy will need to buy 20 carpet squares to cover the room