Question 186064
Call the distance from his starting point {{{d}}}
By the pythagorean theorem for a right triangle:
{{{d^2 = 7^2 + 4^2}}}
{{{d^2 = 49 + 16}}}
{{{d^2 = 65}}}
{{{d = sqrt(65)}}}
{{{d = 8.062}}} mi