  Answers to Exercises for Chapter 3 1. Prec-ann.shp had the GCS_Assumed_1 coordinate system. 2. Answers below a. The coordinate system is USA_Contiguous_Equidistant_Conic b. Map units are meters. c. Display units are miles.
d. Map units of the source are decimal degrees. 3. The map distance from Olympia Washington to Tallahassee Florida is approximately 2356.070365 miles. 4. You would simply swith the display units to kilometers on the general tab of the data frames properties. The same distance in km is approximately 3774.675216 km.
5. The new distance in miles is approximately 2217.666414 miles. That is a difference of 138.403951 miles. 6. The distance in Mercator centered at 103 W using NAD83 is approximately 3052.348926. That is a difference from #3 of 696.278561 miles.
7. 8. V 9. Coordinate Systems represented a. GCS_North_American_1927 – data sets using this system = 11 b. GCS_North_American_1983 – data sets using this system = 1 10. Does not work. 
