A man swims across the river which flows with a velocity of 3 km/h due east.if the velocity of man relative to water is 4 km/h due north, then How far from his starting point will he reach the opposite bank?

A man swims across the river which flows with a velocity of 3 km/h due east.if the velocity of man relative to water is 4 km/h due north, then What is his velocity relative to the shore of the river?

A man swims across the river which flows with a velocity of 3 km/h due east.if the velocity of man relative to water is 4 km/h due north, then How long does he take to across the river if the river is 1 km wide?

A man goes 24 m due west and then 7 m due north. How far is he from the starting point?

Two boats, each with velocity 8km*h^(-1) , attempt to cross a river of width 800 m. The velocity of river current is 5 km*h^(-1) . One of the boats crosses the river following the shortest path and the other follows the route in which the time taken is minimum. If they start simultaneously, what would be the time difference between their arrivals at the other bank ?