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Hectometer and Square Hectometer – A Short Note

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

1 hectometer = 100 meters

Hectometers are not as commonly used in everyday measurements but can be useful for measuring medium-large distances, like the length of sports fields or large plots of land.

A square hectometer (symbol: hm²) is a unit of area representing a square with sides one hectometer long:

1 hm² = (100 m) × (100 m) = 10,000 m²

Square hectometers are used to measure fairly large areas, such as farms, parks, or large property plots.

In summary:

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  Hectometer (hm) measures moderate lengths (hundreds of meters)

  
  
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  Square hectometer (hm²) measures substantial areas (thousands of square meters)

  
  
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  Used in land measurement and agriculture contexts

  
  

Decimeter and Square Decimeter – A Short Note

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

1 decimeter = 10⁻¹ meters (0.1 meters)

Decimeters are used to measure lengths that are larger than centimeters but smaller than a meter, such as the size of a small box or the length of a hand.

A square decimeter (symbol: dm²) is a unit of area representing a square with sides one decimeter long:

1 dm² = (0.1 m) × (0.1 m) = 0.01 m²

Square decimeters are commonly used to measure medium-sized surface areas, such as the area of a notebook page, a tile, or a small tabletop.

In summary:

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  Decimeter (dm) measures moderate lengths

  
  
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  Square decimeter (dm²) measures moderate areas

  
  
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  Used in everyday measurements, education, and practical applications