Concentric circles have same
radius
centre
diameter
circumference
Concentric circles have same centre and different radii which results in different diameters and circumferences. Concentric circles are shown below:
All these circles have same centre, O and different radii.
A circular wire of diameter 10cm is cut and placed along the circumference of a circle of diameter 1 metre. The angle subtended by the wire at the centre of the circle is equal to
Calculate the circumference of a circle having its diameter as 28 cm.