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Area of a circle from the diameter

Grade 7 math · Fieldbook Learning

Name ______________________ Date __________

Area = π × radius × radius, with π = 3.14. Halve a diameter to get the radius.

  1. A circle has a diameter of 94 cm. Find its area. Use π = 3.14.
  2. A circle has a diameter of 70 cm. Find its area. Use π = 3.14.
  3. A circle has a diameter of 110 cm. Find its area. Use π = 3.14.
  4. A circle has a diameter of 48 cm. Find its area. Use π = 3.14.
  5. A circle has a diameter of 54 cm. Find its area. Use π = 3.14.
  6. A circle has a diameter of 150 cm. Find its area. Use π = 3.14.
  7. A circle has a diameter of 20 cm. Find its area. Use π = 3.14.
  8. A circle has a diameter of 44 cm. Find its area. Use π = 3.14.
  9. A circle has a diameter of 56 cm. Find its area. Use π = 3.14.
  10. A circle has a diameter of 156 cm. Find its area. Use π = 3.14.
  11. A circle has a diameter of 170 cm. Find its area. Use π = 3.14.
  12. A circle has a diameter of 66 cm. Find its area. Use π = 3.14.
  13. A circle has a diameter of 158 cm. Find its area. Use π = 3.14.
  14. A circle has a diameter of 108 cm. Find its area. Use π = 3.14.
  15. A circle has a diameter of 58 cm. Find its area. Use π = 3.14.
  16. A circle has a diameter of 118 cm. Find its area. Use π = 3.14.
  17. A circle has a diameter of 234 cm. Find its area. Use π = 3.14.
  18. A circle has a diameter of 166 cm. Find its area. Use π = 3.14.
  19. A circle has a diameter of 116 cm. Find its area. Use π = 3.14.
  20. A circle has a diameter of 250 cm. Find its area. Use π = 3.14.
More free practice: fieldbooklearning.com/practice/grade-7/area-of-a-circle-from-the-diameter/

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Answer key: Area of a circle from the diameter

  1. 6936.26
  2. 3846.5
  3. 9498.5
  4. 1808.64
  5. 2289.06
  6. 17662.5
  7. 314
  8. 1519.76
  9. 2461.76
  10. 19103.76
  11. 22686.5
  12. 3419.46
  13. 19596.74
  14. 9156.24
  15. 2640.74
  16. 10930.34
  17. 42983.46
  18. 21631.46
  19. 10562.96
  20. 49062.5