An acre is a measure of area and has two dimensions;
640 acres by 640 acres is 409600 acres2 which has four dimensions.
Methinks you do not mean a property that is 640 acres by 640 acres.
Getting back to just 640 acres (and forgetting the "by 640 acres") as long as the shape has an area of 640 acres it doesn't matter what shape it is.
The shape with an area of 640 acres with least perimeter is a circle:
area = π x radius2
⇒ radius = √(area/π)
circumference = 2 x π x radius
= 2 x π x √(area/π)
= 2 x √(area x π)
= 2 x √(640 x 4840 sq yds x π)
≈ 6239 yds
Any other shape will have a longer perimeter - it can have any value greater than approx 6239 yards, examples a rectangle with sides:
One square mile = 640 acres.
1 sq mile = 640 acres → 324 sq mi = 324 × 640 acres = 207360 acres
1 square mile = 640 acres 83000 acres/640 = 129.6875 square miles
1 square mile is 640 acres so 3 acres = 3/640 sq mile
640 = acres in a square mile.
Information about the area is not enough to determine the perimeter. 640 acres is 1 sq mile. The smallest perimeter possible is if the area is in the shape of a circle and in that case the perimeter would be 3.54 miles = 18717 feet. If the area is a square the perimeter would be 4 miles = 21120 feet. If it is a rectangle, then any value greater than 4 miles.
There are 640 acres in 1 square mile.
640 acres, algebraic steps below: 1 mi²*640 acres 1 mi²=640 acres
409,600 acres in 640 square miles 0.1581 acres in 640 square meters
640 acres = 27,878,400ft²
One square mile = 640 acres.
640 acres = 27,878,400 square feet.
Answer: 640 acres = 1 square mile.
640 acres.
No. 3 miles is distance. 640 acres is area. They are not comparable. 640 acres is one square mile.
1 sq mile = 640 acres → 324 sq mi = 324 × 640 acres = 207360 acres
A square mile is 640 acres, so 39.5 x 640 = 25,280 acres