What is 21ro in Square Kilometres?

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What is 21 Roods (21ro) in Square Kilometres (km²)?

What is 21ro in km²? Convert 21 Roods (21ro) to Square Kilometres (km²) and show formula, brief history on the units and quick maths for the conversion.

Enter Roods to convert to Square Kilometres


Quick Reference for Converting Roods to Square Kilometres

Formula
km² = ro / 988.42
Quick Rough Maths
To get the Square Kilometres, divide the number of Roods by 988.4
Roods (ro) in 1 Square Kilometre
There are 988.42 Roods in 1 Square Kilometre
Square Kilometres (km²) in 1 Rood
There are 0 Square Kilometres in 1 Rood

Unit Information

Rood
/ruːd/
Symbol: ro
Unit System: Historic English

What is the Rood?

The rood is a unit of area used in historic England with the symbol ro.

Its unit size is equal to 1/4 of an acre, 10,890 ft² or 1,012m². A rectangle equal to one furlong in length and one rod in width is one rood in area.

Its use was very important in surveying land because of the ease of conversion into acres from smaller sections of land.

Square Kilometre
/skwɛːˌˈkɪləˌmiːtə,kɪˈlɒmɪtə/
Symbol: km²
Unit System: SI

What is the Square Kilometre?

The square kilometre is a unit of area and is a multiple of the square metre; an SI derived unit. It has the symbol km².

A square kilometre is equal to the area of a square with edges 1km long. There are 1,000,000 square metres in a square kilometre.

Square kilometres are often used to describe expansive areas of land due to the large unit size.


Conversion Tables for Roods (ro) to Square Kilometres (km²)