document.write( "Question 1188767: A submarine leaves the US base and travels 560 km due East\r
\n" ); document.write( "\n" ); document.write( "at 54 kph and then 816 kmdue North At the same rate of speed, how long will it\r
\n" ); document.write( "\n" ); document.write( "take it to get back to its base by the shortest route? \n" ); document.write( "

Algebra.Com's Answer #819946 by ikleyn(52790) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "\r\n" );
document.write( "Calculate the hypotenuse of the right angled triangle\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    c =  = 989.67 kilometers\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "and then divide it by the rate of 54 km/h  to get the travel time\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "     = 18.33 hours   (rounded).    ANSWER\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "---------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "In this solution, I neglect the fact that the Earth surface is spherical, \r
\n" ); document.write( "\n" ); document.write( "and consider it as flat.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );