Length of floor = 5 m and breadth of floor = 4 m Area of floor = length x breadth = 5 m x 4 m = 20 m2 Now, Side of square carpet = 3 m Area of square carpet = side x side = 3 x 3 = 9 m2 Area of floor that is not carpeted = 20 m2 – 9 m2 = 11 m2