Two boats start from ferry ghat (the origin), one towards ferry ghat along the straight line , the other towards ferry ghat along the straight line perpendicular to the path followed by . The river is 1 km wide uniformly. Rahul wants to go to the exact opposite point of along the river.
Use this information to answer the given subquestions.
Question
How much distance does Rahul have to travel to reach his destination if he takes the boat towards ferry ghat ?