Question

Ravi travelled 4 km straight towards South He turned left and travelled 6 km straight, then turn right and travelled four km . How far is he from the starting point ?

• A. $4km$
• B. $10km$
• C. $6km$
• D. $0km$

Answer 1

The correct option is B $10km$

B is the finishing point and is 10 km from the point A The aerial distance of A from B is 10 km calculated as below $(AB{)}^2=(AD{)}^2+(DB{)}^2=(8{)}^2+(6{)}^2=64+36=100$
$\therefore$ AB = 10 km