Ratio between Circumference and radius

Use the slider to change r ( the radius of the circle). Record the Circumference and radius for 5 different values. Divide the circumference by the radius for each pair of values.
1.
If r=1, what is the circumference?
2.
If r=2, what is the circumference?
3.
If r=3, what is the circumference?
4.
If r=4, what is the circumference?
5.
If r=5, what is the circumference?
6.
For questions 1-5 divide the circumference by r. What do you get?
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Information: Ratio between Circumference and radius