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baobeep555
2 năm trước
Một thửa ruộng hình bình hành có độ dài đáy là 120m, chiều cao là 80m. Người ta trồng lúa trên thửa ruộng đó, tính ra cứ 100m2 thu hoạch được 65 kg thóc. Hỏi đã thu hoạch được ở thửa ruộng đó bao nhiêu ki-lô-gam thóc
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