Circumference of Circles, Half Circles and Quarter Circles (Year 9)
Free printable NZ Year 9 maths worksheet: find the circumference of a circle, and the perimeter of a semicircle or quarter circle, using pi ~ 3.14.
✓ Answer key checked by math, never wrong
Grade 8 · Math worksheet
Name
Date
Math
Circumference of Circles, Half Circles and Quarter Circles
Find the circumference or perimeter of each shape. Use pi ~ 3.14 for decimal answers.
- 1.Find the circumference of a circle with radius 12 cm. Give your answer as an exact multiple of pi, and as a decimal using pi ~ 3.14.
- 2.Find the circumference of a circle with radius 9 cm. Give your answer as an exact multiple of pi, and as a decimal using pi ~ 3.14.
- 3.Find the circumference of a circle with radius 16 cm. Give your answer as an exact multiple of pi, and as a decimal using pi ~ 3.14.
- 4.Find the circumference of a circle with radius 19 cm. Give your answer as an exact multiple of pi, and as a decimal using pi ~ 3.14.
- 5.Find the perimeter of a semicircle (half circle) with radius 6 cm (the curved arc plus the straight edge). Use pi ~ 3.14.
- 6.Find the perimeter of a semicircle (half circle) with radius 8 cm (the curved arc plus the straight edge). Use pi ~ 3.14.
- 7.Find the perimeter of a semicircle (half circle) with radius 3 cm (the curved arc plus the straight edge). Use pi ~ 3.14.
- 8.Find the perimeter of a semicircle (half circle) with radius 13 cm (the curved arc plus the straight edge). Use pi ~ 3.14.
- 9.Find the perimeter of a quarter circle with radius 7 cm (the curved arc plus the two straight radii). Use pi ~ 3.14.
- 10.Find the perimeter of a quarter circle with radius 8 cm (the curved arc plus the two straight radii). Use pi ~ 3.14.
- 11.Find the perimeter of a quarter circle with radius 11 cm (the curved arc plus the two straight radii). Use pi ~ 3.14.
Made with ChalkBee · chalkbee.com