Jamie would like to build a tall circular fence around her garden. The garden space takes up 36 square feet. About approximately how much fencing material will she need to enclose her garden?

Answer 1

Area of a circle: A = π•r² so:

36 = π•r²

36/π = r²

r = √(36/π) = 6/√π

Circumference (what you are looking for): C = 2π•r so:

C = 2π•(6/√π) = 12π/√π = 12√π ≈ 21.27 feet of "tall" fencing