Find the coordinates of the circumcentre of the triangle whose vertices are (8, 6), (8, -2) and (2, -2). Also, find its circumradius.

Point (-3, 5) lies in the

1. first quadrant

2. second quadrant

3. third quadrant

4. fourth quadrant

Abscissa of a point is positive in

1. I and II quadrants

2. I and IV quadrants

3. I quadrant only

4. II quadrants only

The point which lies on y-axis at a distance of 5 units in the negative direction of y-axis is

1. (0, 5)

2. (5, 0)

3. (0, -5)

4. (-5, 0)