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What is the equivalent of 1 kilometer (km) in meters (m)?

  1. 1000 meters

  2. 500 meters

  3. 1500 meters

  4. 2500 meters

The correct answer is: 1000 meters

The conversion between kilometers and meters is based on the metric system's defined relationships. One kilometer is equal to 1,000 meters. This is because the metric system is decimal-based, meaning each unit is a factor of 10. Specifically, "kilo-" refers to a factor of 1,000. Therefore, when you convert kilometers to meters, you multiply the number of kilometers by 1,000. For instance, if you have 1 kilometer and want to express that distance in meters, you simply calculate: 1 kilometer × 1,000 meters/kilometer = 1,000 meters. This fundamental metric relationship is consistent, making it easy to convert between these two units of distance.