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A circular area of 5 miles radius covers 50265.5 acres (to 1 dp) Area = pi*radius2, which with radius in miles will give you area as 78.53982 square miles, then multiply by 64 â¦ 0, since there are 640 acres in 1 square mile.
How many acres of land in a circle with a radius of 50 miles? 1 square mile = 640 acres Area of the circle is Ï x 502 square miles = Ï x 502 x 640 acres ~= 5,026,548 acres.If the circle's diameter is two miles, the area would  be: 8042 acres  A diameter radius of two miles is 12.5 square miles  If the circle's circumference is two miles, t â¦ he area  would be: 203.7 ac  . 1 person found this useful.