Question

Check my answer?
http://prntscr.com/6bi13i

Answer 1

It's not correct.

Answer 2

what is the value of x?

Answer 3

If you want to calculate, you use Pythagoras theorem
distance=sqrt(60^2+51^2)=?

But you know that the distance cannot be less than 60 nor 51, and cannot be equal to the sum.