100 acres
One acer is equal to 4046.825 sq. meter
None, since an acer is a type of tree.But, there are 43560 sq feet in an acre.
An acer is a tree so there is no conversion.If you meant an acre, there is still no conversion. A mile is a measure of distance while an acre is a measure of area. The two measure different things...
Allowing for rounding error, as a very rough estimate, I would suggest 1.
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