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Circumference - Worksheet 9 - 7th Grade

Hard

Use radius and diameter correctly and leave circle measurements exact in terms of π.

hard: Use another set to practice explaining and checking your answers.

23 problems · 15-20 minutes · Skills: geometry, circles, formulas

About This Worksheet

This hard-level worksheet contains 23 problems designed for 7th Grade students practicing circumference. Hard worksheets feature challenging problems including multi-step questions, missing values, and real-world applications to push students further.

Read labeled dimensions and coordinates. Recall multiplication facts and length units.

  • Use radius and diameter correctly and leave circle measurements exact in terms of π.
  • Check your result using the method in the example before moving to the next question.

How to Solve: Worked Example

Example Problem: A circle has radius 7 cm. Find its circumference in terms of π.
Solution Steps:
  1. Radius is 7 cm.
  2. Use C = 2πr.
Answer: 14π cm
Tip: Check your result using the method in the example before moving to the next question.
1
A circle has radius 4 cm. Find its circumference in terms of π.
2
A circle has diameter 4 cm. Find its circumference in terms of π.
3
A circle has radius 15 cm. Find its circumference in terms of π.
4
A circle has diameter 2 cm. Find its circumference in terms of π.
5
A circle has radius 6 cm. Find its circumference in terms of π.
6
A circle has diameter 12 cm. Find its circumference in terms of π.
7
A circle has radius 14 cm. Find its circumference in terms of π.
8
A circle has diameter 28 cm. Find its circumference in terms of π.
9
A circle has radius 7 cm. Find its circumference in terms of π.
10
A circle has diameter 14 cm. Find its circumference in terms of π.
11
A circle has radius 1 cm. Find its circumference in terms of π.
12
A circle has diameter 22 cm. Find its circumference in terms of π.
13
A circle has radius 2 cm. Find its circumference in terms of π.
14
A circle has diameter 20 cm. Find its circumference in terms of π.
15
A circle has radius 12 cm. Find its circumference in terms of π.
16
A circle has diameter 8 cm. Find its circumference in terms of π.
17
A circle has radius 8 cm. Find its circumference in terms of π.
18
A circle has diameter 24 cm. Find its circumference in terms of π.
19
A circle has radius 11 cm. Find its circumference in terms of π.
20
A circle has diameter 26 cm. Find its circumference in terms of π.
21
A circle has radius 9 cm. Find its circumference in terms of π.
22
A circle has diameter 10 cm. Find its circumference in terms of π.
23
A circle has radius 13 cm. Find its circumference in terms of π.

Answer Key

1. 8π cm2. 4π cm3. 30π cm4. 2π cm5. 12π cm6. 12π cm7. 28π cm8. 28π cm9. 14π cm10. 14π cm11. 2π cm12. 22π cm13. 4π cm14. 20π cm15. 24π cm16. 8π cm17. 16π cm18. 24π cm19. 22π cm20. 26π cm21. 18π cm22. 10π cm23. 26π cm

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What skills does this geometry worksheet cover?

This worksheet focuses on geometry, circles, formulas. It is designed for 7th Grade students and provides structured practice through varied problem types with a worked example to guide students before they begin.

Can I use this worksheet in my classroom?

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How many problems are on this worksheet?

This worksheet contains 23 problems. It typically takes 15-20 minutes to complete. An answer key with all solutions is included so parents and teachers can check work quickly.