How many square feet in a 60 ft circle?

Answer 1

Let's formulate the question in another way:

"What is the area of a circle with a perimeter of 60 ft?"

Solution:

C = 2 pi r (replace C with 60 ft)

60 ft = 2 pi r (divide by 2 pi to both sides)

(30/pi) ft = r

A = pi r (replace r with (30/pi ft))

A = pi (30/pi ft)2 = 900/pi ft2 ≈ 286.5 ft2