Answer variants:
6.3
7.8
6.8
8.8
Identify the coordinates of a point \(A\), where \(AB\) is the diameter of a circle whose centre is and \(B\) is \((7, 2)\). Also, find the radius of the circle.
The coordinates of point \(A\) \(=\)
The radius of the circle \(=\) unit
[Note: Round off the radius value to one decimal place]