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Cttn2706
2 năm trước
giúp mk với Một thửa rộng hình thang có độ dài 2 đáy lần lượt là 15,65m và 25,75m chiều cao bằng hiệu giữa đáy lớn và đáy nhỏ a, Diện Tích của thửa ruộng đó bằng bao nhiêu m2 b, Nếu phải dùng 10% Diện Tích để làm thửa ruộng thì Diện Tích trồng lúa còn lại bao nhiêu m2 c, Số lượng thóc đã thu được từ thửa ruộng đó là bao nhiêu kg.Biết rằng cứ 1m2 thu được 0,6 kg thóc.
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