Convert 21 Acres to Square Kilometers
How big is 21 acres? What is 21 acres in square kilometers? 21 acres to sq km conversion.
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21 Acres ≈
0.084983985 Square Kilometers
result rounded
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Result in Plain English
21 acres is equal to about 0.0850 square kilometers.
To a Percentage
21 acres ≈ 8.50% of a square kilometer.
In Scientific Notation
21 acres
= 2.1 x 101 acres
≈ 8.4984 x 10-2 square kilometers
Acres
An acre is a unit of area equal to 1/640th of a square mile. It is about the size of an American football field.Abbreviation: ac
Square Kilometers
A square kilometer, or square kilometre, is a unit of area. It is the size of a square that is one kilometer on a side. It is 1 million square meters, 100 hectares, about 247 acres, or about 0.386 square miles.Common abbreviations: sq km, km², km^2