Try free sample papers for IMO, IEO and NSO

Browse study material for Olympiads

Grade 7 | Maths | Circumference of Circle, Perimeter and Area, Olympiad, CBSE, ICSE, SOF, ITO

**Circumference of a circle: **The perimeter of a circle is called the circumference of a circle.

*Circumference of circle=2 X pie X r*

*Circumference of a semicircle = 22/7 * r + 2r*