Question

how many square tiles of side 9 CM will be needed to fit in a square floor of a bathroom of side 720 cm? find the cost of tiling at the rate of rupees 7.50 per tile?​

Answer 1

Answer:

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Side of square of tile =9cm

Area of a square tile =Side×Side

=(9×9) cm2

=81 cm2

Side of a square floor =20 cm

Area of square floor =Side×Side

=(20×20) cm2

=400 cm2

No. of tiles required to lift in a floor  =Area of square tileArea of square floor

=81400

=4.93

≅5

Cost of one tile =Rs.7.50

Cost of 5 tiles =Rs.(7.50×5)

=Rs.37.50

∴  No. of tiles required =5

Cost of tiling =Rs.37.50

Answer 2

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