Perhaps you are referring to the vara, which was a surveying unit of length, originating from Spain. It is approximately 1 yard. Many surveys in Texas were specified in vara, which was 33 1/3 inches. Note that the var or vara is a unit of length, while acre is a unit of area. So square vars could convert to acres. See related link, below.
1 metre = 1.0936 var (yards).
1 var means how many sq ft?
1 square VAR = 7.7 Square feet
1
1.196 var, approx.
1 acre = 40.5 ares
9
In India, the unit "var" (also spelled as "bigha var" or "bigha varai") is commonly used in some states like Gujarat for measuring land. One var is equivalent to 1 square yard. To convert square yards to square feet, we use the conversion factor: 1 square yard = 9 square feet Therefore, 1 var = 9 square feet.
1 acre = 4,046.8564 square meters
There are approximately 6.25 rai in 1 acre.
1 acre = 4,046.86 m2
1 acre = 43,560 square feet.