I depends what the units for the 200 and 400 are.
1 acre = 4840 sq yds
200 × 400 = 80,000 sq units
You will need to know the ratio of 1 yd to 1 of your units
Then the ratio of the areas is the ratio of the lengths squared.
Then divide the 80,000 by the area's ratio to find what what it is in sq yd and finally divide that by 4840 sq yds/acre to find out how many acres it is.
eg if your units are metres:
1 yd = 0.9144 m
→ 1 sq yd = 0.9144² sq m
→ 80,000 sq m = 80,000 ÷ 0.9144² sq yd = 80,000 ÷ 0.9144² ÷ 4840 acres ≈ 19.77 acres
eg if you units are yards:
1 yd = 1 yd
→ 80,000 sq yd = 80,000 ÷ 4840 acres ≈ 16.53 acres
eg if you units are feet
1 yd = 3 ft
→ 1 sq yd = 3³ sq ft
→ 80,000 sq ft = 80,000 ÷ 3² sq yd = 80,000 ÷ 3² ÷ 4840 acres ≈ 1.84 acres
If your units are something else then you'll need to do the final conversion - this is why mathematical answers are INCORRECT when there are units and they are NOT given in the answer.
About 1.8 (1.83654729) acres.
1.836 acre.
400 ft x 200 ft = 80000 ft2 80000 ft2 ÷ 43560.17 ft2/acre = 1.83654 acres
200' x 650' = about three acres. (2.9843893480257115 acres).
1 ACRE IS 43,560 SQ FT. SO YOUR 200 FT X 400 FT (80,000 SQ FT) IS 1.83655 ACRES, MORE OR LESS. -eXpReXo
80000 yards2 = 16.52886 acres calculation: 400 yards x 200 yards = 80000 yards2 1 acre = 4839.963 yards2
200 x 350 feet is equal to 1.606 acres.
2.3 acres for 250' x 400'
300' x 400' is 2.75 acres.
200 feet x 490 feet is 2.25 acres.
400 ft x 300 ft = 120,000 sq ft = 2.755 acres (approx)
4.9 acres.
1.01 acres.
About 5.5 acres.
8.264 acres.
Minimum of 3 Acres.....400 x 400 sq ft
200' x 650' = about three acres.
One acre has 43,560 square feet. Divide the number of square feet by that and you get the number of acres. This gives you an answer of 3.67 acres.
400 x 225 feet equals 90000 square feet, which equals 2.0661157 acres.
About 13.54 acres.
1.377 acres (rounded)
About 4.6 (4.59136823) acres.
0.51 acres (approx).
7.346 (rounded)
200 feet wide x 900 feet deep is 4.132 acres.