document.write( "Question 634236: Two airplanes depart from the same place at 2 pm. One plane flies north at a speed of 478 km/hr, and the other flies east at a speed of 374 km/hr. How far apart are the airplanes at 4:00 pm? \n" ); document.write( "
Algebra.Com's Answer #399449 by richwmiller(17219)\"\" \"About 
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(2*478)^2+(2*374)^2=c^2
\n" ); document.write( "c=1213.85 km
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