Steps of Construction-

1. Draw a circle with centre C and radius 3.4 cm.

2. Draw its diameter AB

3. Taking A and B as centers and radius more than half of it, draw two arcs which intersect each other at P and Q.

4. Join PQ. Then PQ is the perpendicular bisector of AB.

5. We observe that this perpendicular bisector of AB passes through the centre C of the circle.