1. Describe the ratios [b]C/d[/b] you found. Round this number to the nearest hundredths. Where have you seen this number before? What is its name?
2. How is the circumference of a circle related to its diameter? (Hint: How many times greater is the circumference than the diameter?)
3. Write a formula to find the circumference [b]C[/b] of any circle using diameter [b]d [/b]and pi[b]π[/b].
Write a formula to find the [b]C[/b] of any cirlce using the radius [b]r [/b]and [b]pi [/b]