Minneapolis, Minnesota; Arkadelphia, Arkansas; and Alexandria, Louisiana lie on the same longitude line. The latitude of Minneapolis is 45° N, the latitude of Arkadelphia is 34° N, and the latitude of Alexandria is 31° N. The radius of Earth is about 3960 miles.
a. Find the approximate distance between Minneapolis and Arkadelphia.
b. What is the approximate distance between Minneapolis and Alexandria?
c. Find the approximate distance between Arkadelphia and Alexandria.