Suppose the area of a circle is π. What is its radius?
yikes... my answer is in the comments because I didnt realize. All you have to do is take the formula of a circles area and substitute the area and basically work backwards. I got the radius is the square root of 1
πr² = π ⇒r² = π/π = 1 ⇒r = 1 Radius of the circle is 1 unit.