I think it is 420 but I'm not sure
If youknow the diameter of the circle, then
Circumference = (π) x (Diameter).
If youknow the radius of the circle, then
Circumference = (π/2) x(radius).
If you know the area of the circle, then
Circumference= 2 √ (π A) .
Answer:
It's a whole number. It cannot be a mixed number. Anyways I would have to know the denominator.