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Bunhh2610
2 năm trước
Bài 3: Một khu ruộng hình chữ nhật có chu vi là 360m. Chiều rộng bằng 7 2 chiều dài. a, Diện tích thửa ruộng là bao nhiêu héc – ta? b, Người ta cấy lúa trung bình 100 m 2 thì thu hoạch được 75 kg thóc. Hỏi trên thửa ruộng đó người ta thu hoạch được bao nhiêu tấn thóc?
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