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2022-04-25 20:00:36
Đổi: 5 dm = 0,5m
Diện tích 1 tấm gạch là:
0,5 x 0,5 = 0,25 (m2)
Diện tích nền đó là:
0,25 x 80 = 20 (m2)
Đ/s:......
2022-03-25 21:11:53
2022-03-24 17:52:07
2022-03-24 17:36:17
2022-03-24 17:36:17
2022-03-24 17:36:17
2022-03-24 17:34:02
2022-03-24 17:34:02
2022-03-24 17:34:02
2022-03-23 20:44:40