You will have walked about 10.92 miles in perimeter.
* * * * *
That is a total rubbish answer. An area does not and cannot define a perimeter. An area of 3 acres can comprise an extremely thin strip stretching millions of miles. So the perimeter would also run to millions of miles. And if the strip was thinner, it could be billions of miles or trillions, etc.
Assuming the parcel is a square, the perimeter is equal to 3.54 miles.
The perimeter of a 340-acre square lot is 2.92 miles.
400 miles
The perimeter of a 35-acre square lot is 0.935 miles.
2.65 miles.
The perimeter of a 17-acre square lot is 0.65 miles (3,442.14 feet).
The perimeter of a 30-acre square lot is 0.866 miles.
Approximately 0.94 miles.
The perimeter of a 600-acre square lot is 3.87 miles.
200,000 acres is 312.5 square miles.
There are 512 acres in 0.8 square miles.
99,000 acres = 154.6875 sq miles.