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這間房子所需鋪設地磚的面積是:6平方分米/塊×350塊=2100平方分米. 1塊3分米正方形地磚的面積是:3分米×3分米=9平方分米. 這間房子至少需要鋪設3分米正方形地磚的塊數是:2100平方分米÷9平方分米/塊=233.3塊≈234塊.
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