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Nguyễn Tấn Nam
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![](https://rs.olm.vn/images/medal_dai_kien_tuong.png)
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0
2023-09-10 09:58:19
bài giải:Nửa chu vi là:120:2=60 chiều dài hình chữ nhật là:60 nhân với 5=300 cm chiều rộng hình chữ nhật là:300nhân với 60=18000cm diện tích hình chữ nhật là:300 nhân với 18000=5400000 <cm vuông>. Đáp số:5400000cm vuông.
2023-05-11 17:06:40
2023-03-22 18:22:11
chịu
2022-03-18 17:26:55
2022-03-18 17:26:05
2022-03-18 17:24:33
2022-03-05 08:28:36
2022-03-05 08:26:56
2022-03-05 08:26:16
2022-03-05 08:25:07