Metric System

Kilômét

Định nghĩa

Đơn vị đo chiều dài trong hệ metric, bằng 1.000 mét hay khoảng 0,621371 dặm.

Giải thích

The kilometer is the standard unit for expressing road distances and geographic measurements in metric countries. The Earth's circumference is approximately 40,075 km; the distance from New York to Los Angeles is about 4,500 km. At 100 km/h (the common highway speed limit in metric countries), a vehicle covers 1 km every 36 seconds. One kilometer equals 1,093.61 yards or 3,280.84 feet.

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