A particle has displacement 12cm towards east and 9cm towards north and then 6cm vertically upward. The magnitude of the displacement of the particle is:

A particle has displacement 12cm towards east and 9cm towards north an

1.	A particle has displacement 12cm towards east and 9cm towards north and then 6cm vertically upward. The magnitude of the displacement of the particle is:
A.	\(\sqrt {216} \;cm\)
B.	\(\sqrt {131} \;cm\)
C.	\(\sqrt {261} \;cm\)
D.	\(\sqrt {331} cm\)
Answer» D. \(\sqrt {331} cm\)

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