Circumference of a Circle Quiz
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Questions and Answers

What is the formula to find the circumference of a circle?

  • π * radius^2
  • 2 * π * radius (correct)
  • 2 * π * diameter
  • π * diameter

    • If the radius of a circle is doubled, how does the circumference change?

  • It increases by π
  • It quadruples
  • It doubles (correct)
  • It remains the same

    • What is the relationship between the circumference and the diameter of a circle?

  • Circumference = π / diameter
  • Circumference = 2 * π * diameter (correct)
  • Circumference = π * diameter
  • Circumference = 2 * diameter

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