If the radius of a circle is 7 units, what is its circumference?

Practice Questions

Q1
If the radius of a circle is 7 units, what is its circumference?
  1. 14π units
  2. 21π units
  3. 28π units
  4. 7π units

Questions & Step-by-Step Solutions

If the radius of a circle is 7 units, what is its circumference?
  • Step 1: Understand that the circumference of a circle is calculated using the formula: Circumference = 2 * π * radius.
  • Step 2: Identify the radius of the circle, which is given as 7 units.
  • Step 3: Substitute the radius into the formula: Circumference = 2 * π * 7.
  • Step 4: Calculate 2 * 7, which equals 14.
  • Step 5: Combine the result with π to get the final answer: Circumference = 14π units.
  • Circumference of a Circle – The circumference of a circle is calculated using the formula C = 2 * π * r, where r is the radius.
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