A person starts to walk from a ground in the west direction to reach his home. After 13km he reaches at point Y. From point Y, he takes a right turn, walks 7 km and reaches point C. From point C, he takes a left turn, walks 9km and reaches point T. From point T, he takes a left turn and walks 4km and reaches his home.
What is the shortest distance between his home and point Y?
Show answer & explanation
Correct answer: B
Explanation
Use Pythagoras theorem,
the shortest distance between Y and home is,
√(9² + 3²) = √90 = 3√10 km
Hence, the correct answer is option (2).