charlatan
3.16
billrussell42
4 acres = 19360 square yards
IF the land is a square, one side = √19360 = 139 yards, and perimeter = 557 yards
1 mile = 1750 yards, so 1750 / 557 = 3.1 laps
IF the land is a circle, radius r = √(A/π) and circumference = 2πr = 2π √(A/π) = 493 yards
so 1750 / 493 = 3.5 laps
IF the land is a rectangle, 100 yards by 193.6 yards, perimeter = 2•293.6 = 587 yards
so 1750 / 587 = 3.0 laps
IF the land is a rectangle, 300 yards by 64.5 yards, perimeter = 2•364.5 = 729 yards
so 1750 / 729 = 2.4 laps
etc
etc
busterwasmycat
define the shape of the area first, or you cannot know the length of the perimeter. An acre has no defined shape in modern usage. Historically, the idea would refer to a rectangle having a 10 to 1 side length (660ft by 66 ft), which would mean a perimeter of 2*(660+66)=1452 feet. 1452/5280 = 0.275, or you would run 0.275 miles each time you ran around that field. 1/0.275=3.64 laps per mile.
David
That would depend on its side lengths but there are 1760 yards in a mile.
Anonymous
You can't calculate the permiter distance based solely on area.
What shape is it?