How do you find the circumference and area of a circle by using pi as a fraction?

I'm not quite sure what you are allowed to use here. If a diameter is given, then circumference = pi x diameter, or equivalently 2 x pi x radius. And the area is pi x r^2, where r is the radius But something tells me that's not what you meant. Some other possibilities for your question: 1. area/circumference = r/2 2. circumference/area = 2/r 3. RatiOS are fractions, and pi is a ratio between the circumference of a circle and its diameter.