1 hinh thang co so do canh day be la 4,5m va = 60% day lon . neu giam canh day lon 1,6m thi dien tich hinh thang giam di 5,4 . tinh dien tich hinh thang do
1 cua hang da mua vao 75.000 dong 1 hop keo . cua hang da ban ra va laI duoc 24% gia von cua moi hop keo . hoi cua hang do da ban...tien 1 hop keo
ai nhanh minh LIKE cho