This road sign was found along Coconino County Road 3 in Arizona.

The sign says...

+----------------------+ | Stoneman Lk.Rd. 4 | | Mormon Lake 12 | | Flagstaff 40 | +----------------------+ | 305 | | <-- | +-----+the numbers are: 4 12 40 305 tan(305) = 0.271933 now the numbers are: 0.271933 4 12 40 0.271933 x (40 / sqrt(4 + 12)) 0.271933 x (40 / sqrt(16)) 0.271933 x (40 / 4) 0.271933 x 10 = 2.71933 2.71933 rounded to the nearest hundreth is 2.72 2.71933 truncated to the hundreths is 2.71 note: e = 2.71828183## Almost Pi

This road sign almost equals Pi (3.14). The following is our first use of a trigonomic/hyperbolic function.

arctan(305) x sqrt(40 - 12 - factorial(4)) arctan(305) x sqrt(40 - 12 - 24) arctan(305) x sqrt(4) 1.56751765 x 2 = 3.1350353 3.135 rounded to nearest hundreth is 3.14 3.135 truncated to the hundreths is 3.13This road sign cannot be submitted to RoadSignMath.com as a Pi sign because the result must equal

`3.14`

when truncated to the hundreths.## RSeval: Road Sign Evaluation

This road sign, located along Coconino County Road 3 in Arizona, evaluates to 61.

the numbers are... 4 12 40 305 the math is... 305 / (40 / (12 - 4)) = 305 / (40 / 8) = 305 / 5 = 61Note: The road sign used in this BAB was taken on the same roadtrip as the AZ Hwy-61 sign.

## Updated::2009.05.11

This update did not result in the discovery of any new equations.

the numbers are... 4 12 40 305 observe... sqrt(305 - 4 - 12) = sqrt(289) = 17 sqrt(305 + 4! - 40) = sqrt(289) = 17

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

**Created:** 18 March 2006

This work is licensed under a Creative Commons Attribution 3.0 United States License.