Identify the coordinates of a point \(A\), where \(AB\) is the diameter of a circle whose centre is and \(B\) is \((7, 10)\). Also, find the radius of the circle.
The coordinates of point \(A\) \(=\)
The radius of the circle \(=\) unit
Answer variants:
1.4
2.4
−0.1
0.4