Question 1107718
A person travels 2 km due North, then 15 km due East, after that 19 km due West and then 15 km due South. How far is he from the starting points? 
Options:a)5km b)9km c)37km d)61km 
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None of the above.
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Based on the description, the person ends up 4km West and 13km South of where they started.  The shortest distance from their starting point (0,0) to  (-4,-13) is    {{{sqrt(4^2+13^2) = sqrt(16+169) = sqrt(185) }}} which is approximately 13.6km from the starting point.   
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