mara lays a square grid over a map of the city she lives in as shown below. each square represents 1 square mile. whats the distance to the nearest tenth of a mile from the post office directly to the library

The distance from the post office to the market is 8 miles;
The distance from the market to the Library is 7 miles.
a. Thus the distance from the post office to the library;
[tex]Distance=\sqrt{8^2+7^2}=\text{ 10.6 miles}[/tex]b. The difference in distance is;
[tex]8+7-10.6=4.4miles[/tex]