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

Given:

Length of the floor = 5 m

Breadth of the floor = 4 m

Side of the square carpet = 3 m

Area of the floor = length × breadth

= 5 × 4 sq. m

= 20 sq. m

Area of the square carpet = side × side

= 3 × 3 sq. m

= 9 sq. m

Area of the floor not carpeted = Area of the floor - Area of the carpet

= 20 - 9

= 11 sq. m

Hence, the area of the floor that is not carpeted is 11 sq. m.