Question

A traveller go 5 kilometres due east and then 12 kmdue north how far is it from starting point

Answer 1

If you want to find the distance then it will be 5+12=17 km
But if you need to find displacement then it would be 
underroot 5 square+12 square
underroot 169
= 13 km

Answer 2

Ur answer is 13.hope it helps you