Velocity With the Wind = 700/3.5 = 200 mph
Velocity Against the Wind = 700/5 = 140 mph
Taking the average we get:
Airplane Velocity In Still Air = 170 mph
Wind Velocity = 30 mph
Source:
http://www.1728.org/veloccal.htm
Because the boarder goes around all edges, 6 in must be subtracted from 6ft and 4ft.
6ft - 6in = 5.5 ft
4ft - 6in = 3.5 ft
Area of the bulletin board: (5.5)(3.5) = 19.25 ft
19 is probably the answer I’m just put ranmdom sh