A person starts from a point, walks 7 km towards West, then turns left and walks 8 km, and finally turns right and walks 8 km. How far is the person from the starting point?

💡 Solution & Explanation

Take North and East as positive. North–South: −8 = −8 km (8 km South). East–West: −7 −8 = −15 km (15 km West). The distance is √(15² + 8²) = √289 = 17 km.