Road Sign Math

Roger Knowles took this sign on his morning drive to work.

Mr. Knowles plays around with the math on this sign to increase his player score. Without the square root additions his score would have been 4, however he sneaks in a valid solution with a higher value.

This sign is found in Fremont, California on the Auto Mall Exit of I-880 southbound. The GPS coordinates are approximately N37.5093 W121.96996. See sign on map!