640 acres is one square mile, so 400 acres is about two thirds of a square mile.
400 acres is 17,424,000 square feet.
400 acres.
That would be 3.67 acres.
Answer: 400 acres = 0.625 mi²
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.
There are 256,000 acres in 400 square miles. This is calculated by multiplying the number of square miles by 640 (which is the number of acres in a square mile).
Answer: 160,000 square feet = 3.67309 acres
400 ft * 900 ft = 8.26 acres, approx.
(2,200 x 400) / (43,560 square feet per acre) = 20.2 acres (rounded)
400 ft * 200 ft = 80000 sq ft = 1.837 acres (to 3 dp)
It is 1.25 acres
300' x 400' is 2.75 acres.