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vothihongvan
2 năm trước
1. Một thửa ruộng hình chữ nhật có chiều dài 150 m chiều rộng bằng 2 phần 3 chiều dài Trung bình cứ 100 mét vuông của thửa ruộng đó thu được 60 kg thóc hỏi trên cả thửa ruộng đó người ta thu được bao nhiêu tấn thóc ? 2. Một bể nước dạng hình hộp chữ nhật có các kích thước đo ở trong lòng bể là chiều dài 4 m chiều rộng 3 m chiều cao 2,5 M biết rằng 80% thể tích của bể đang chứa nước hỏi A trong bể có bao nhiêu lít nước 1l=1dm3 B mức nước chứa trong bể cao bao nhiêu mét Giúp em tóm tắt 2 bài này thôi
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