Question

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.

Answer 1

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