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.
Answer: 160,000 square feet = 3.67309 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).
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.