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saunheo2007
2 năm trước
bài 3: một cái thùng ko náp dạng hộp hình chữ nhật có chiều dài 8,5m chiều cao 37dm và chiều rộng 4,6m người ta sơn mặt ngoài cái thùng. hỏi a:diện tích quét sơn là bao nhiêu mét vuông. b: thể tích của cái hộp là bao nhiêu mét vuông
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