BARS::Pi Sign Approaching Rio Salado on Southbound Loop 101 in Tempe, Arizona

This road sign was found on southbound Loop 101 in Tempe, Arizona.

The road sign says...

   +----------------------------+
   | Rio Salado Pky/8th St      |
   | University Dr          1/4 |
   | Broadway Rd          1 3/4 |
   | Southern Ave         2 3/4 |
   +----------------------------+

   the fraction 22/7 is often used to approximate Pi

   the numbers are:  8  (1/4)  (1 3/4)  (2 3/4)
   
   the math is:  8 x (1/4) x ((2 3/4) / (1 3/4)) = Pi (3.14)

   observe...
      8 x (1/4) = 2
      2 3/4 = 11/4  and  1 3/4 = 7/4
      11/4 ÷ 7/4 = 11/4 x 4/7 = 11/7
      2 x 11/7 = 22/7 = 3.14 (Pi to nearest hundreth)

Note: This BARS was created on 18 April 2007. I've been driving under this sign for almost 10 years.


Creator: Gerald D. Thurman [gthurman@gmail.com]
Created: 18 April 2007

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This work is licensed under a Creative Commons License.