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Kilometer and Square Kilometer – A Short Note

A kilometer (symbol: km) is a unit of length in the metric system, equal to:

1 kilometer = 1,000 meters

Kilometers are commonly used to measure long distances, such as the length between cities, the distance traveled by vehicles, or the size of large geographical features.

A square kilometer (symbol: km²) is a unit of area representing a square that is one kilometer long on each side:

1 km² = (1,000 m) × (1,000 m) = 1,000,000 m²

Square kilometers are widely used to measure large surface areas, like the size of cities, countries, forests, or lakes.

In summary:

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  Kilometer (km) measures long lengths or distances

  
  
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  Square kilometer (km²) measures large areas

  
  
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  Commonly used in geography, travel, and land measurement

  
  

Mile and Square Mile – A Short Note

A mile is a unit of length used mainly in the United States and the UK. One mile equals 5,280 feet or approximately 1.609 kilometers. It is commonly used to measure long distances, such as the length of roads, travel routes, or large-scale maps.

A square mile (written as mi²) is a unit of area. It represents the area of a square that is one mile on each side. One square mile equals 640 acres or approximately 2.59 square kilometers. It is often used to measure large land areas, such as cities, regions, or forests.

In summary, a mile measures distance (one-dimensional), while a square mile measures area (two-dimensional). The distinction is important in geography, land surveying, and transportation planning.