how many square tiles with side 20 cm must be placed on a floor which is 7 m by 5m?
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Area of the floor =7m×5m
=35 m^2=350000 cm^2
Area of the square tile =20×20 cm^2
=400 cm^2
No. of tiles required =350000/400
=875
=35 m^2=350000 cm^2
Area of the square tile =20×20 cm^2
=400 cm^2
No. of tiles required =350000/400
=875
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