Respuesta :

Answer:

258.07 miles apart

Step-by-step explanation:

After 3 hours, 1st train is 70 *3 =210 miles North. The 2nd train will be 50*3 =150 miles East.

The distance apart is sqrt(210^2 +150^2)  

= SQRT(44100+22500)

= 258.07 miles apart