Respuesta :

Answer:

10√2 miles.

Step-by-step explanation:

this is a special 45°-45°-90° triangle. if the two sides are x, then the hypotenuse (f) would be x√2.

since in this case, the other two sides are 10mi, the hypotenuse (f) would be 10√2 miles.

(sorry my explanation is terrible)