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If a circle has a radius of 4 cm, what is its diameter? (2022)

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Question: If a circle has a radius of 4 cm, what is its diameter? (2022)

Options:

  1. 4 cm
  2. 8 cm
  3. 12 cm
  4. 16 cm

Correct Answer: 8 cm

Exam Year: 2022

Solution: 

Diameter = 2 * radius = 2 * 4 cm = 8 cm.

If a circle has a radius of 4 cm, what is its diameter? (2022)

Practice Questions

Q1
If a circle has a radius of 4 cm, what is its diameter? (2022)
  1. 4 cm
  2. 8 cm
  3. 12 cm
  4. 16 cm

Questions & Step-by-Step Solutions

If a circle has a radius of 4 cm, what is its diameter? (2022)
  • Step 1: Understand that the radius of a circle is the distance from the center to the edge.
  • Step 2: Know that the diameter of a circle is twice the length of the radius.
  • Step 3: Identify the given radius, which is 4 cm.
  • Step 4: Use the formula for diameter: Diameter = 2 * radius.
  • Step 5: Substitute the radius into the formula: Diameter = 2 * 4 cm.
  • Step 6: Calculate the result: Diameter = 8 cm.
  • Circle Properties – Understanding the relationship between the radius and diameter of a circle, where the diameter is twice the radius.
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