Success TutoringWorksheets

6th Grade Circumference and Area of Circles Worksheet — Level 1 — Answers

Answer sheet with worked solutions for the 6th Grade area & perimeter worksheet.

Download answers PDFPrint answersBack to worksheet
Success TutoringWorksheetsAnswer sheet6th Grade · Mathematics · Area & Perimeter

6th Grade Circumference and Area of Circles Worksheet — Level 1 — Answers

Show your work. Use the π button on your calculator and round to 1 decimal place unless told otherwise.

1.A circle has a radius of 19 cm. Find its circumference, correct to 1 decimal place.

Answer: 119.4 cm

  1. C = 2 × π × r = 2 × π × 19
  2. ≈ 119.4 cm
2.A circle has a radius of 3 cm. Find its circumference, correct to 1 decimal place.

Answer: 18.8 cm

  1. C = 2 × π × r = 2 × π × 3
  2. ≈ 18.8 cm
3.A circle has a radius of 12 cm. Find its area, correct to 1 decimal place.

Answer: 452.4 cm2

  1. A = π × r2 = π × 122 = π × 144
  2. ≈ 452.4 cm2
4.A circle has a diameter of 8 cm. What is its radius?

Answer: 4 cm

The radius is half the diameter.

5.A circle has a diameter of 26 cm. What is its radius?

Answer: 13 cm

The radius is half the diameter.

6.A circle has a diameter of 22 cm. Find its circumference, correct to 1 decimal place.

Answer: 69.1 cm

  1. C = π × d = π × 22
  2. ≈ 69.1 cm
7.A circle has a radius of 20 cm. Find its area, correct to 1 decimal place.

Answer: 1256.6 cm2

  1. A = π × r2 = π × 202 = π × 400
  2. ≈ 1256.6 cm2
8.A circle has a radius of 20 cm. Find its circumference, correct to 1 decimal place.

Answer: 125.7 cm

  1. C = 2 × π × r = 2 × π × 20
  2. ≈ 125.7 cm
9.A circle has a diameter of 26 cm. Find its circumference, correct to 1 decimal place.

Answer: 81.7 cm

  1. C = π × d = π × 26
  2. ≈ 81.7 cm
10.A circle has a radius of 14 cm. Find its circumference, correct to 1 decimal place.

Answer: 88.0 cm

  1. C = 2 × π × r = 2 × π × 14
  2. ≈ 88.0 cm
Free worksheets at worksheets.successtutoring.com · © Success Tutoring · Free for personal and classroom use

Marking tips

  • Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
  • For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
  • Celebrate what went well first, then pick one thing to work on next.

Great work. Here's what to try next: