None.
A square mile is a measure of area. Since an acre is itself a measure of area, a square acre is a measure [of volume?] in 4-dimensional hyper space. Because the dimensions are different, according to the rules of elementary dimensional analysis, conversion from one to the other is not valid.
In one square mile, there are 640 acres.
In one acre, there are 0.0015625 square miles.
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You misunderstand ; There is no such thing as a 'square acre'. An Acre is an Imperial measure of area.
1 ACRE = 4840 SQ. YRDS.
1 sq. Mile = 1760yds x 1760yds = 3097600 sq.yds.
Hence
Acres in a square mils is 3097600 / 4840 = 640 acres in 1 sq. mile.
640 acres = 1 square mile I don't know what "square mile acre" means. * * * * * A square mile acre would be a measure of "volume" in 4-dimensional hyperspace.
An acre is a unit of area, and a linear mile is a measure of length, so they cannot really be compared. However, if you mean a square mile, there are 640 acres to a square mile.
1 acre = 4,840 square yards1 chain = 22 yards 1 sq chain = 22 times 22 sq yd = 484 sq yd1 acre = 10 sq chains = 4,840 square yardsAnother way to figure it outFirst, keep in mind that an acre is a unit of area, whereas the inch, foot, yard, rod, chain, and mileare all units of length. (Never say, "square acre," because there is no such thing as an acre. The acre is already a unit of area.) Second, there are 640 acres to the square mile, so if you know how many square yards are contained in a square mile, then you can easily figure out the answer you seek using simple division.One mile equals 1760 yards, so a square mile equals 1760 yards times 1760 yards, which is 3,097,600 square yards. Now, divide that number by 640 and you get 4,840 square yards per acre.1 acre = 4,840.0021 square yards1 acre = 4840 square yards1 acre = 4840 sq yards4840
1 acre = 43,560 square feet0.18 acre = 7,840.8 square feet
Answer: 1 acre = 6,272,640 in²