It is proved that the point on the circle indicates that the distance to the origin is 7, and the point inside the circle indicates that the distance to the origin is less than 7.

3 2+4 2 = 25, and the distance to the origin is 5, which is in the circle.

4 2+4 2 = 32, the distance to the origin is 2, and the root number 2 is in the circle.

4^2+5^2=4 1<； 49. In circles

4^2+6^2=52>； 49, outside the park

From above, we can see that point D is outside the circle.