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tung2060


Bai nay nua,
Neu giam chieu dai hinh chu nhat 37,5 % thi phai tang chieu rong bao nhieu phan tram thi dien tich khong doi?
Neu giam chieu dai hinh chu nhat 37,5 % thi phai tang chieu rong bao nhieu phan tram thi dien tich khong doi?