https://books.google.com/books?id=WNgsEAAAQBAJ&source=gbs_book_other_versions_r&cad=3
Join Sir Cumference for wordplay, puns, and problem solving in this entertaining, medieval math adventure story about radius and the number Pi. This time the...
sir cumferencedragonpicindygoogle
https://www.christianbook.com/cumference-and-the-first-round-table/cindy-neuschwander/9781570911521/pd/911525
Another installment in the educational adventures of Sir Cumference! There's potential trouble when the King Arthur's knights spot the Circumscribers looking...
sir cumferencefirst roundtablecindy
https://en.wikipedia.org/wiki/Sir_Cumference?fbclid=IwAR0fM4uXVU1Np70i7BpYRbUYnavJiY0OvfgxZ2zqBYtfneF5mwAXoLQQDhk
sir cumferencewikipedia