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Circumference of a circle from the diameter

Grade 7 math · Fieldbook Learning

Name ______________________ Date __________

Circumference = π × diameter, with π = 3.14. Double the radius to get the diameter.

  1. A circle has a diameter of 76 cm. Find its circumference. Use π = 3.14.
  2. A circle has a diameter of 44 cm. Find its circumference. Use π = 3.14.
  3. A circle has a diameter of 56 cm. Find its circumference. Use π = 3.14.
  4. A circle has a diameter of 78 cm. Find its circumference. Use π = 3.14.
  5. A circle has a diameter of 152 cm. Find its circumference. Use π = 3.14.
  6. A circle has a diameter of 46 cm. Find its circumference. Use π = 3.14.
  7. A circle has a diameter of 62 cm. Find its circumference. Use π = 3.14.
  8. A circle has a diameter of 14 cm. Find its circumference. Use π = 3.14.
  9. A circle has a diameter of 58 cm. Find its circumference. Use π = 3.14.
  10. A circle has a diameter of 128 cm. Find its circumference. Use π = 3.14.
  11. A circle has a diameter of 112 cm. Find its circumference. Use π = 3.14.
  12. A circle has a diameter of 110 cm. Find its circumference. Use π = 3.14.
  13. A circle has a diameter of 178 cm. Find its circumference. Use π = 3.14.
  14. A circle has a diameter of 126 cm. Find its circumference. Use π = 3.14.
  15. A circle has a diameter of 100 cm. Find its circumference. Use π = 3.14.
  16. A circle has a diameter of 68 cm. Find its circumference. Use π = 3.14.
  17. A circle has a diameter of 198 cm. Find its circumference. Use π = 3.14.
  18. A circle has a diameter of 148 cm. Find its circumference. Use π = 3.14.
  19. A circle has a diameter of 296 cm. Find its circumference. Use π = 3.14.
  20. A circle has a diameter of 274 cm. Find its circumference. Use π = 3.14.
More free practice: fieldbooklearning.com/practice/grade-7/circumference-of-a-circle-from-the-diameter/

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Answer key: Circumference of a circle from the diameter

  1. 238.64
  2. 138.16
  3. 175.84
  4. 244.92
  5. 477.28
  6. 144.44
  7. 194.68
  8. 43.96
  9. 182.12
  10. 401.92
  11. 351.68
  12. 345.4
  13. 558.92
  14. 395.64
  15. 314
  16. 213.52
  17. 621.72
  18. 464.72
  19. 929.44
  20. 860.36