question_answer

Mohit starts from A and walks 2 km East upto B and turns southwards and walks 1 km upto C. At C he turns to East and walks 2 km upto D. He then turns northwards and walks 4 km to E. How far is he from his starting point?

A)  3 km                           

B)  4 km          

C)  5 km                           

D)  6 km

Correct Answer: C

Solution :

We are required the length of AE. We know, AE2 = AF2 + EF2 = 42 + 32 = 25 .-.  AE = 5 km