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thanhnhan.tq2002
2 năm trước
1 cái bể dạng HHCN có số đo kích thước trong lòng bể như sau: chiều dài 5m , chiều rộng 3m và chiều cao 2m. Trong bể chứa 45 phần trăm thể tích nước . a/ chiều cao mực nước hiện tại trong bể là bao nhiêu ? b/ hỏi phải bơm bao nhiêu lít nước nữa thì đầy bể ?
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