Answer:
Answer is 14 Km (approx.)
Explanation:
Let the herdman's distance towards west be BC
Let the herdman's distance towards south be AC
So, we need to find length AB.
By Pythagoras Theorem,
(AB)² = (BC)² + (AC)²
= (10)² + (10)²
= 100 + 100
= 200
So, AB= √200 = 10√2 = 14 Km (approx.)
Hope it helps you
