The record for the longest nonstop closed-circuit flight by a model air-
plane was set in italy in 1986. the plane flew a total distance of 1239 km.
assume that at some point the plane traveled 1.25 x 100m to the east, then
1.25 x 10m to the north, and finally 1.00 x 10 m to the southeast. calcu-
late the total displacement for this portion of the flight.