A person starts from a point, walks 7 km towards West, then turns left and walks 9 km, and finally turns right and walks 5 km. How far is the person from the starting point?

💡 Solution & Explanation

Take North and East as positive. North–South: −9 = −9 km (9 km South). East–West: −7 −5 = −12 km (12 km West). The distance is √(12² + 9²) = √225 = 15 km.