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phamminhnho2002
2 năm trước
một bể nước dạng hình hộp chữ nhật có CD 1,6 m,CR 1,2m, CC 0,8 m.lượng nước trong bể chiếm 75% thể tích của bể . a.hỏi trong bể có bao nhiêu lít nước (biết 1dm ³=1lít )? b.người ta bỏ vào bể một vật không thấm nước thì thấy mức nước trong bể dâng lên 0,5 dm. hỏi vật đó có thể tích bao nhiêu ? giúp mk với
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