Question 1024560
So in total he walked 3 miles north and 4 miles east. 
In walking distance it would be {{{3+4=7}}}
In actual distance, use the Pythagorean theorem,
{{{D^2=3^2+4^2}}}
{{{D^2=9+16}}}
{{{D^2=25}}}
{{{D=5}}}