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Circumference - Worksheet 7 - 7th Grade

Medium

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

medium: Practice the same exercise types with a fresh numbered set.

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

About This Worksheet

This medium-level worksheet contains 18 problems designed for 7th Grade students practicing circumference. Medium worksheets introduce larger numbers and varied question formats to deepen understanding and build fluency.

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 28 cm. Find its circumference in terms of π.
3
A circle has radius 10 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 13 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 1 cm. Find its circumference in terms of π.
8
A circle has diameter 4 cm. Find its circumference in terms of π.
9
A circle has radius 15 cm. Find its circumference in terms of π.
10
A circle has diameter 30 cm. Find its circumference in terms of π.
11
A circle has radius 8 cm. Find its circumference in terms of π.
12
A circle has diameter 14 cm. Find its circumference in terms of π.
13
A circle has radius 9 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 24 cm. Find its circumference in terms of π.
17
A circle has radius 7 cm. Find its circumference in terms of π.
18
A circle has diameter 16 cm. Find its circumference in terms of π.

Answer Key

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

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How many problems are on this worksheet?

This worksheet contains 18 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.