Question

a swimmer makes his strokes perpendicular to the flow of river at speed 8 metre per second relative to still water. he arrives at a point 20 metre downstream from the point directly across the river which is 14 metre wide. the velocity of the swimmer with respect to ground will be
a) 4√5
b) 2√5
c) 3√5
d) 6√5

please answer me fast...

Answer 1

3rute 5 is your answer