Question

Bob wants to cover the floor of a room 3 m wide and 4 m long by squared tiles. If each square tile is of side 0.5 m, then find the number of tiles required to cover the floor of the room.

Answer 1

Total area of tiles must be equal to the area of the floor of the room.
Length of the room = 4 m
Breadth of the room = 3 m

Area of the floor = length × breadth = 4 m × 3 m = 12 sq m

Area of one square tile = side × side = 0.5 m × 0.5 m = 0.25 sq m

Number of tiles required = `"Area of the floor"/"Area of one tile" = 12/0.25 = 1200/25` = 48 tiles.