Distance from Point on Diameter to Circle Edge

Consider a circle with a radius of 3 units. A diameter of this circle is drawn, and a point on the diameter is selected such that it is 1 unit from the center of the circle. What is the distance from this point to the edge of the circle?

Recall that the diameter of a circle is twice the radius, and the distance from the center to the edge of the circle is equal to the radius.