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2024-04-19 15:41:30
2022-11-15 22:23:32
2022-10-05 15:28:28
chiều dài hình chữ nhật là (45x4):2-10=80(m)
diện tích hình chữ nhật đó là 80x10=800(m2)
đáp số :800m2
2022-01-16 21:14:15