Question

9000square tiles of size 20cm are required to pave the floor of a hall.find the area of the floor of the hall in square metre.

Answer 1

Surface area of one tile = 20x20 = 400cm²
Total surface area of the tiles= 9000x400=3600000cm²
So, surface area of floor = 3.6m²

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Answer 2

the area of the floor of the hall = 360 m² if 9000 square tiles of size 20cm are required

Step-by-step explanation:

9000 square tiles of size 20cm

1 tile size = 20 cm * 20 cm

1m = 100 cm

=> 1 cm = 1/100 m

=> 20 cm = 20/100 m  = 1/5 m

Area of 1 tile = (1/5) * (1/5)  = 1/25 m²

Area of 9000 tiles = 9000/25  = 360 m²

the area of the floor of the hall = 360 m²

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