Sir Cumference has been turned into a dragon! Help Radius and Lady Di of Ameter break the spell and save Sir Cumference. The answer to this problem lies in this poem. Can you solve the riddle?

The Circle's Measure Measure the middle and circle around, Divide so a number can be found. Every circle, great and small. The number is the same for all. It's also the dose, so be clever. Or a dragon he will stay... Forever.

1. Help Radius interpret the potion. What do you think is meant by "measure the middle and circle around"?

2. What two numbers should you divide? How do you know? How can you set up these numbers as a ratio?

3. How would you explain your emerging understanding of the relationship between circumference and diameter?