Question

How many square tiles of side 2m will be required to cover the floor of the washroom of length 40 m and breadth 20m?

Answer 1

Step-by-step explanation:

Area of the floor = 40m × 20m = 800 m²

Area of each tile = 2m × 2m = 4m²

Number of tiles requied to cover the floor = 800/4

= 200 tiles

Answer 2

Step-by-step explanation:

Area of the room (Ar) = length × width

Ar = 12m × 15m = 180 m²

But 1 m² = 10000 cm²

180 m² = 1800000 cm²

Area of the square tile (As) = (length)² = l²

As = 20 cm × 20 cm = 400 cm²

Number of square tiles needed (n) = Ar/As

n = 1800000/400 = 4500

Thus,

4,500 square tiles will be needed to build the floor of a 12m x 15m room.