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2022-04-20 20:49:34
Đáy bé thửa ruộng hình thang đó là:
75 x 2/3 = 50 ( m )
Chiều cao thửa ruộng hình thang đó là:
50 x 2/5 = 20 (m )
Diện tích thửa ruộng đó là:
( 75 + 50 ) x 20 : 2 = 1250 ( m2 )
Đ/S : 1250 m2
2022-04-20 20:39:45
1h12p = 1,2 h
Tổng vận tốc của 2 xe là:
90 : 1,2 = 75 ( km/h )
Vận tốc của xe máy là:
( 75 - 10 ) : 2 = 32,5 ( km/h )
Vận tốc của ô tô là:
32,5 + 10 = 42,5 ( km/h )
Đ/S: Xe máy: 32,5 km/h
Ô tô: 42,5 km/h
2022-04-20 18:56:14
How much water do you drink every day?