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Trên mảnh đất hình thang có đáy lớn 25m đáy nhỏ 15m chiều cao 20m bác Tâm dành phần đất hình tròn có đường kính 4m để trồng hoa, phần đất còn lại để trồng rau.Trung bình cứ mỗi mét vuông thu được 3kg rau.Vậy bác Tâm thu hoạch được bao nhiêu kg rau Giải ra hộ mình với Mình đang cần gấp
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