Question

A man walks 2 km towards north. then he turns to east and walks 10 km. after this he turns to north and walks 3 km. again he turns towards east and walks 2 km. how far is he from the starting point?
a.10 km
b.15 km
c.13 km
d.none of these

Answer 1

consider the diagram

13²=12²+5²