Dekameter
A dekameter (dam) is a unit of length in the metric system, equal to 10 meters. It sits between a meter and a hectometer in size. Although it is an official part of the metric system, the dekameter is rarely used in everyday life, education, or even science. For example, a small swimming pool might be around 2 dekameters long. The symbol for dekameter is "dam". Since most people prefer using meters or kilometers, the dekameter is more of a theoretical unit used mainly for teaching the structure of the metric system.
Vara de Tarea
The vara de tarea is a traditional Spanish and Latin American unit of area used especially in land measurement and agriculture. It combines the vara, a unit of length, with the tarea, a unit of area.
The vara is roughly 33 inches (about 0.84 meters), though it varies by region.
A tarea typically refers to an area equal to 100 square varas, but this can differ locally.
Therefore, a vara de tarea is often used to express land area based on square varas.
This unit remains in use in some rural parts of Latin America for land deeds and agricultural measurements, reflecting historical Spanish colonial measurement systems.
Summary:
Vara ≈ 0.84 meters
Tarea ≈ 100 square varas (area)
Vara de tarea = unit combining length and area for land measurement
Common in Spanish-speaking countries’ historical land records
No conversions available for length.