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Dekameter and Square Dekameter – A Short Note
A dekameter (symbol: dam) is a unit of length in the metric system, equal to:
1 dekameter = 10 meters
Dekameters are not commonly used in everyday life but can be helpful for measuring medium distances, such as the length of a swimming pool or a small field.
A square dekameter (symbol: dam²) is a unit of area representing a square with sides one dekameter long:
1 dam² = (10 m) × (10 m) = 100 m²
Square dekameters are used to measure areas like playgrounds, gardens, or small plots of land.
In summary:
Dekameter (dam) measures moderate lengths (tens of meters)
Square dekameter (dam²) measures moderate areas (hundreds of square meters)
Occasionally used in land measurement and construction
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:
Kilometer (km) measures long lengths or distances
Square kilometer (km²) measures large areas
Commonly used in geography, travel, and land measurement