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tahuyhungdc
2 năm trước
Một bể đựng nước hình hộp chữ nhật, không có nắp. Người ta đo trong lòng bể được chiều dài 2,5m ; chiều rộng 2m ; chiều cao 1m . a) Tính xem bể đó đựng được bao nhiêu lít nước ? ( Biết 1dm ³ = 1 lít ) b) Bác thợ cần sơn chống thấm các mặt trong lòng bể đó. Tính diện tích cần sơn. Ai nhanh đây ta ! 5* + cảm ơn + câu trả lời hay nhất
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