Question 883722
This is a right triangle problem.  This ship has sailed 60 miles north and 60 miles east.  Those are the legs of the triangle.  Your job is to find the hypotenuse.
Using the formula {{{a^2}}}+{{{b^2}}}={{{c^2}}}, we have
60^2 + 60^2 = x^2
3600 + 3600 = x^2
7200 = x^2
Take the square root to get: 84.85 (rounded) or "the square root of 7200" (not rounded)