Answer:
Diameter = 10 units
Step-by-step explanation:
If the circle has a center at (5, 2) and a point on the circle is (8, 6), we can graph the circle as:
Since the circle passes through the points (10, 2) and (0, 2), we can calculate the diameter of the circle as:
Diameter = 10 - 0 = 10 units
Therefore, the answer is 10 units.