Google celebrates pi day 2010

google pi day logo

Today, March 14th, is pi day! I guess the non-geeks don’t celebrate pi day, but thankfully, Google is the king of geeks. Happy pi day everyone!

You can see in Google’s “pi day logo” at their homepage has some famous formulas, including:

  • the famous area of a circle formula: A = pi r^2
  • the function sin x, with one period plotted
  • Archimedes’ calculation of pi, namely: 223/71 < π < 22/7
  • volume of a sphere: V = (4/3) pi r^3
  • volume of a cylinder: V = pi r^2 h
  • circumference of a circle: C = 2 pi r
** Note: Some posts on Math-Fail are user-submitted and NOT verified by the admin of the site before publication. If you find this post to be distasteful, non-math related, ?or something worse?, then definitely leave a comment letting me know. Thanks very much! Mike **

1 Star2 Stars3 Stars4 Stars5 Stars (5.00 from 1 votes)


  1. V1: Volume of a cylinder (where r = height = 1) V1 = pi
    V2: Volume of a cone (where r = height = 1) V2 = (1/3)*pi
    V3: Volume of a sphere (where r = 1) V3 = (4/3)*pi

    The simplified ratio of V1:V2:V3 is:

    Pi day!!!

    Thumb up 3 Thumb down 0