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What is the length of a diameter of a circle with a radius of 7 cm? (2022)

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Question: What is the length of a diameter of a circle with a radius of 7 cm? (2022)

Options:

  1. 14 cm
  2. 21 cm
  3. 7 cm
  4. 28 cm

Correct Answer: 14 cm

Exam Year: 2022

Solution: 

Diameter = 2 × radius; Diameter = 2 × 7 cm = 14 cm.

What is the length of a diameter of a circle with a radius of 7 cm? (2022)

Practice Questions

Q1
What is the length of a diameter of a circle with a radius of 7 cm? (2022)
  1. 14 cm
  2. 21 cm
  3. 7 cm
  4. 28 cm

Questions & Step-by-Step Solutions

What is the length of a diameter of a circle with a radius of 7 cm? (2022)
  • Step 1: Understand that the diameter of a circle is twice the length of the radius.
  • Step 2: Identify the radius given in the question, which is 7 cm.
  • Step 3: Use the formula for diameter: Diameter = 2 × radius.
  • Step 4: Substitute the radius into the formula: Diameter = 2 × 7 cm.
  • Step 5: Calculate the result: Diameter = 14 cm.
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