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2024-04-01 20:49:44
đổi: 3,8dm=38cm
độ dài hai đáy là:
38+62=100(cm)
chiều cao là:
100*40%=40(cm)
diện tích hình thang là:
(38+62):2*40=2000(\(cm^2\))
đ/s:2000\(cm^2\)
2024-04-01 20:45:13
6 giờ 30 phút=390 phút
390 x 5 = 1950 phút
2024-04-01 20:37:03
quãng đường ô tô đi đc là:
62,9*5=314,5(km)
đ/s:314,5(km)
2024-04-01 20:34:19
5/7 + 9/14
=10/14+9/14
=19/14
3-11/12
=36/12-11/12
=25/12
2/3*5
=10/3
3/7:1/2
=3/7*2/1
=6/7
2024-04-01 20:28:19
6,05
2024-04-01 20:28:09
chết nhầm 5 thành 6
2024-04-01 20:25:48
=165,5:10-10,5
=16,65-10,5
=6,15
2024-04-01 20:20:25
tính trên vũ trụ thì phải là thổ tinh chứ?
2024-04-01 20:19:42
sao lại mộc tinh?
2024-04-01 20:14:46
thế giới?