CIRCUMFERENCE OF THE CIRCLE
The CIRCUMFERENCE of a circle is the total length of the outer periphery(boundary) of the circle.
If radius of the circle = r
Then, Circumference of the circle = 2πr units
Here, π=22/7=3.14 aproximately
Ex:-
radius of the circle = r = 35cm
Circumference of the circle = 2πr
= (22/7)x35
=22x 5
=110 cm