How do you calculate the diameter of a 2 acre circle?

Area of a circle = pi R2

R = 'radius' = 1/2 Diameter

Diameter = 2 x R

Area of 2 acres = 2 x (43,560 square feet) = 87,120 square feet

pi R2 = 87,120

R2 = 87,120 / pi

R = sqrt(87,120 / pi)

D = 2 x R = 2 x sqrt(87,120/pi)

D = 333.05 feet (rounded)