Download or read book Sir Cumference and the Dragon of Pi written by Cindy Neuschwander and published by Charlesbridge. This book was released on 2004-02-01 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sir Cumference, Lady Di of Ameter, and Radius are back in their second Math Adventure! This time, a potion has changed Sir Cumference into a fire-breathing dragon. Can Radius change him back? Join Radius on his quest through the castle to solve a riddle that will reveal the cure. It lies in discovering the magic number that is the same for all circles.