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What is the circumference of a circle with a radius of 7 cm? (2019)

Practice Questions

Q1
What is the circumference of a circle with a radius of 7 cm? (2019)
  1. 14π cm
  2. 21π cm
  3. 7π cm
  4. 28π cm

Questions & Step-by-Step Solutions

What is the circumference of a circle with a radius of 7 cm? (2019)
  • Step 1: Understand that the circumference of a circle is the distance around it.
  • Step 2: Know the formula for circumference: Circumference = 2 * π * radius.
  • Step 3: Identify the radius of the circle, which is given as 7 cm.
  • Step 4: Substitute the radius into the formula: Circumference = 2 * π * 7.
  • Step 5: Calculate 2 * 7, which equals 14.
  • Step 6: Write the final answer as Circumference = 14π cm.
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