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2022-10-23 19:50:06
Chiều rộng của căn phòng là:
10 x 3/5 = 6 (m)
* Diện tích của căn phòng là:
10 x 6 = 60 (m²)
Đổi: 4dm= 0,4m
* Diện tích của viên gạch hình vuông là:
0,4 x 0,4 = 0,16 ( m²)
* Số viên gạch men để lát kính căn phòng là:
60 : 0,16 = 375 ( viên gạch)