13.A square tile is having side of length 15 cm.How many such tiles would be required to
cover the square floor of a bathroom of side 3m ?
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Step-by-step explanation:
Area of square tile = 15 cm × 15 cm
= 225 cm²
Area of square floor = 3 m × 3 m
= 300 cm × 300 cm
= 90000 cm²
No. of square tiles = 90000 cm²/ 225 cm²
= 400 square tiles
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