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In circle O, if the radius is 5 cm, what is the circumference?

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Question: In circle O, if the radius is 5 cm, what is the circumference?

Options:

  1. 10π cm
  2. 15π cm
  3. 20π cm
  4. 25π cm

Correct Answer: 10π cm

Solution: 

Circumference of a circle is given by C = 2πr. Therefore, C = 2π(5) = 10π cm.

In circle O, if the radius is 5 cm, what is the circumference?

Practice Questions

Q1
In circle O, if the radius is 5 cm, what is the circumference?
  1. 10π cm
  2. 15π cm
  3. 20π cm
  4. 25π cm

Questions & Step-by-Step Solutions

In circle O, if the radius is 5 cm, what is the circumference?
  • Circumference of a Circle – The circumference is the distance around a circle, calculated using the formula C = 2πr, where r is the radius.
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