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huuson27
2 năm trước
Một thửa ruộng bình hành có độ dài đáy là 60m, chiều cao bằng 1/4 độ dài đáy a) Tính diện tích thửa ruộng đó b) Trên thửa ruộng ngta trồng ngô và khoai, diện tích trồng ngô bằng 1/2 diện tích trồng khoai. Tính diện tích thửa ruộng trồng khoai
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