Using a bi-cycle, Ayan moves 2 km from A to D due west; then 8 km to B due east via A, and finally 8 km to C due north. His distance in km now from A is

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Using a bi-cycle, Ayan moves 2 km from A to D due west; then 8 km to B due east via A, and finally 8 km to C due <br /> north. His distance in km now from A is