Who said "pi" applies only to circles? What is the value of pi for a square? For a triangle? For other shapes? In this little text we'll learn that playing with values of pi for shapes other than circles has surprising and beautiful good uses. All jolly fun!
A really challenging book that will fascinate anyone interested in puzzles and recreational mathematicians in particular. This volume contains 36 puz-zles ranging from quite easy to quite difficult.
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