math facts

1.        If you write out pi to two decimal places, backwards it spells "pie" 3.14 = PIE 
2.      The spiral shapes of sunflowers follow a Fibonacci sequence.
3.  The Fibonacci sequence is encoded in the number 1/89
4.     A pizza that has radius "z" and height "a" has volume Pi × z × z × a.
5.     The word hundred is derived from the word "hundrath", which actually means 120 and not 100.