How many square tiles of side 4 cm are needed to cover a wall of size 4m by 3.6m?
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in which class are you I think this is your exam
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Answer:
4 m= 400 cm, 3.6 m = 360cm
400x360= 14,400 cm2. Now each tile is 40 x40 cm = 1,600 cm 2
Divide 14,400÷1600 = 9 tiles add 5% for waste and you come up with 10 tiles go with 11 for mess ups
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