If you write out pi to twodecimal places, backwards it spells pie.The spiral shapesof sunfowersfollow a Fibonaccisequence.Thats where you add the twopreceding numbers in thesequence to give you thenext one. So it starts 1, 1, 2,3, 5, 8, 13, 21, etc. TheFibonacci sequence showsup in nature a fair bit.A pia that has radius and hei!ht a has "olume #i $$$ a.Because the area of a circle is Pi multiplied by the radius squared (which can be written out as Pi z z). Then you multiply by the height to get the total volume.%&' seconds is e(actly )weeks.weeks.10! means 10 factorial. 10! = 10 9 8 7 6 5 4 3 2 1 = 3628800seconds. Which is 42 days, or 6 weeks,exactly.*ero is the only numberthat can+t be representedin ,oman numerals.