Solution: Because the minimum distance from the point on the ellipse to the center of the circle is the length of the short semi-axis b=8/2=4.

The maximum distance from the point on the ellipse to the center of the circle is the length of the long semi-axis a= 10/2=5.

Then the distance from the point on the ellipse to the center of the ellipse ranges from 4. 5. I hope it will help you.