### BARS::Dog and Skateboarding Signs in Downtown Tucson, Arizona

These park signs were found on Pi Day 2009 in downtown Tucson, Arizona.

The park signs say...

```   +---------------------+
|  Keep Dogs Leashed  |
|    (T.C.C. 4-97)    |
| Pick Up Dog Litter  |
|    (T.C.C. 4-102)   |
|    Skateboarding    |
|      Prohibited     |
| Tucson Code Section |
|        21-3-7       |
+---------------------+
```
```   the numbers are:  4  97  4  102  21  3  7

the math is:  (21 / 7) * 4 + sqrt(4) = sqrt(102 + 97 - 3)

rsPiEval:  ((102 - 97 - 4) * (4 - 3) + 21) / 7 = Pi
* 22/7 approximates Pi (3.14) rounded to nearest hundredth

rsPhiEval:  (4 / 4 + sqrt(102 - 97)) / ((21 / 7)! / 3) = Phi
* Phi is the golden ratio and it approximates 1.61803399

more math:  (21 - ((102 - 97) * 4)) * 4 + 3 = 7

more math:  21 - 102 + 97 - 4 - sqrt(4) - 3 = 7

There are great numbers in this BARS and many more equations
to be found, but MathBabbler will find them later.  In other
words, this BARS is to be continued!
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 13 April 2009