Geometry
Circumference
Name: Date:
Find the circumference of each circle. Use π = 3.14.
1 cm
2 cm
3 cm
4 cm
5 cm
6 cm
7 cm
8 cm
Free · Grade 7 · Circles to 30 cm across
Circumference of a circle worksheets
Working on circumference of a circle? Print this sheet as it is, or change the level and questions first.
- Answer key included
- Reopen this exact sheet
- Letter & A4 ready
Ready to printCircumference of a circle
The answer key prints on a separate page.
What's on this sheet
The segment on the figure is not decoration. A spoke from the centre is a radius and a chord across the middle is a diameter, and the number sits on the segment rather than off to one side, because a child who puts a diameter where the formula wants a radius gets an answer twice too large.
Why this sheet works
Circles are drawn from their true size rather than from the printed number. On a mixed sheet a circle labelled 20 as a diameter is genuinely half the size of one labelled 20 as a radius, so the picture and the number agree — which is the check a child needs when the two formulas start to blur.