SOLUTION: A submarine leaves the US base and travels 560 km due East at 54 kph and then 816 kmdue North At the same rate of speed, how long will it take it to get back to its base by t

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Question 1188767: A submarine leaves the US base and travels 560 km due East
at 54 kph and then 816 kmdue North At the same rate of speed, how long will it
take it to get back to its base by the shortest route?
Found 2 solutions by ikleyn, Alan3354:
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.

Calculate the hypotenuse of the right angled triangle


    c = sqrt%28560%5E2%2B816%5E2%29 = 989.67 kilometers


and then divide it by the rate of 54 km/h  to get the travel time


    989.67%2F54 = 18.33 hours   (rounded).    ANSWER

Solved.

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In this solution, I neglect the fact that the Earth surface is spherical,
and consider it as flat.



Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
There is no "rate of speed"
There's speed, and there's rate of movement.