68 fields with a little room left over.
4,132,187 US, NFL fields would fit in that area.
A football field is 6400 yd^2, which, in square kilometers, is around 0.0054. 0.8/0.0054 = 148. You could fit 148 football fields into 0.8 km^2
One acre is 43,560 square feet. The conversion would be 6.33 acres.
One acre is 43,560 square feet. The conversion would be .201 acres.
About 7/10 of one US NFL field.
One acre is 43,560 square feet. The conversion would be .689 acres.
One acre is 43,560 square feet. The conversion would be .711 acres.
One acre is 43,560 square feet. The conversion would be 1.01 acres.
There are 43,560 square feet in an acre. The calculation shows that it would be .173 acres.
There are 43,560 square feet in an acre. The calculation shows that it would be .1145 acres.
One acre is 43,560 square feet. The conversion would be 5.11 acres.