Worksheets for students to complete in class.
3 levels of difficulty have been included:
Blue (easy) -Work out the circumference of a circle
Gold (medium) - Work out the radius or diameter given the circumference
Red (Hard)- work out the perimeter of semi circles, quarter circles and sectors
All answers included

My other resources on circumference:
Circumference of circles set of differentiated treasure hunts (10 cards for each difficulty)
Circumference of circles treasure hunt

Circumference and parts of a circle whole lesson (download, print and teach)