SSC CPO SI and ASI 2012 Paper

Question : 34 of 200

Marks: +1, -0

A lady runs 12 km towards north, then 6 km towards south and then 8 km east. How far is she from her starting point and in which direction?

Solution:

(3)

She started from O and ends at C.
According to Pythagoras Theorem,

( {OC})^{2}=( {OD})^{2}+( {CD})^{2}

⇒(8)^{2}+(6)^{2}

⇒64+36=100

and hence

{OC}=

10 km (North–east)

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