3. An aeroplane flies 400km due west from city A to city B, then 300km north east to city C, and finally 100km north to city D, How far is it from city A to D? In what direction must the aeroplane had to return directly to city A from city D? , Scalars and Vectors problem no 3. Sindh Textbook Board (stb) problems

 3.An aeroplane flies 400km due west from city A to city B, then 300km north east to city C, and finally 100km north to city D, How far is it from city A to D? In what direction must the aeroplane had to return directly to city A from city D?