Steve and scott are twins out for a morning jog. they run at the exact same speed they split at a corner one north, one east. one out later they are 10squareroot2 miles apart how fast are they running

Their running paths form the legs of an isosceles right triangle. The hypotenuse of such a triangle (the distance between Steve and Scott) is √2 times the length of one leg. Each has run 10 miles in the hour since they split.

They are running at 10 miles per hour.