This parking sign was found in a parking lot behind the old hardware building located on Mill Avenue in downtown Tempe, Arizona.

The parking sign says...

+------------------------+ | Note your space number | | Pay at meter 48 | -------------------------- | Pay Parking | | 8 am - 4 pm | | except Sundays | | & Holidays | -------------------------- | 2 Hour | | Parking | +------------------------+ the numbers are: 2 4 8 48 the math is: 48 / 8 - 4 = 2This parking lot was also behind the Z Tejas Grill which is located at

20W. 6th St. in Tempe. This parking sign picture includes the number`20`

found on the back of Z Tejas.the numbers are: 2 4 8 20 48 that math is: sqrt(20 - 4) = 48 / 8 - 2 observe... left-hand side 20 - 4 = 16 sqrt(16) = 4 right-hand side 48 / 8 = 6 6 - 2 = 4 pi off-by-one... 48 / 4 + 20 / 2 12 + 10 22 22 --------------- = ------- = ---- ---- approximates pi 8 8 8 7 more math from MAT102 students... 1) 48 = 4 x 20 / 2 + 8 2) 48 = 2(8 / sqrt(4) + 20)In the 2nd BARS, the denominator in the fraction

`22 / 8`

is off-by-one with respect to the denominator in the fraction`22 / 7`

that's used to approximate Pi. Calculate how much these two fractions really are off.

**Creator:** Gerald D. Thurman
[gthurman@gmail.com]

**Created:** 16 September 2006

This work is licensed under a Creative Commons License.