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8 square metres = 80 000 square centimetres (because a rectangle 8 m × 1 m would be 800 cm × 100 cm). 20 cm × 20 cm = 400 cm2. 80 000 / 400 = 200 tiles.

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15y ago
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Q: How many 20cmx20cm tiles do I need to cover 8 square metres?
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