There are 80*80 = 6400 sq feet.
Answer = 80 x 80 = 3600 sq feet
1 sq yd = 9 sq ft 80 sq yd = (80 x 9) = 720 square feet
80 decimal = 34848 sq feet approx.
20ft*4ft = 80 sq ft = 80/9 sq yards = 8.88... sq yards.
= 40 x 80 = 3200 sq feet
None. An inch is a measure of distance (in one dimensional space), a square foot is a measure of area in 2-d space. The two measure different things and it makes no sense to try to convert from one to the other.
75 acres = 3,267,000 square feet.
9 sq ft = 1 sq yd so 80 sq ft = 80/9 = 8.88... sq yards.
689.8051 square meters.
40 ft × 80 ft = 3200 sq ft
861.11 square feet.