The French and Indian War was a conflict between the American colonists and the French over control of the Ohio Valley and the confluence of the Allegheny and Monongahela riversâmodern day Pittsburgh.
1 acre = 160 square rods A rod is a linear measure equal to 5.5 yards, or 16.5 feet while an acre is a measure of area equal to 4840 square yards, or 43,560 square feet.
The formula for the area of a circle is: Area = Ï * radiusÂ² . If the radius is given in feet, the area is in square feet. To convert from square feet to acres, divide by 43560.So the acreage of a circular area is: Acres = Ï * radius_in_feetÂ² / 43560. need a software mapping program that will allow me to draw a circle of varying radius and tell me how many acres in that circle.