Q.8 A floor is 5 m long and 4 m wide. A square carpet of sides 3 m is laid on the floor. Find the area of the floor that is not carpeted.

Area of floor = l × b = 5 × 4
\(= 20 m^2 \)
Area of square carpet = 3 × 3
\(= 9 m^2 \)
Area of floor that is not carpeted = 20 – 9
\(= 11 m^2 \)