1.

In the given figure, P is 400 km eastward of 0 and Q is 300 km northward of 0. R is exactly in the middle of Q and P. Find the distance between R and P.                                           

A.  250 km                        
B.  \[250\sqrt{2}\]km     
C.  300 km                        
D.  400 km
Answer» B.  \[250\sqrt{2}\]km     


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