To find AC, we should use the Segment Addition Postulate. This postulate tells us that, if we have a point between two points, we can add the lengths of the two smaller segments to find the longer segment length. In our case, C is between A and B, so AB is the sum of AC and CB.
AB = AC + CB
From the diagram, we know that the length AB is 62 and the length CB is 11. Now, we can use this to calculate AC.
