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A circle has a radius of 10 cm. What is the diameter? (2020)

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Question: A circle has a radius of 10 cm. What is the diameter? (2020)

Options:

  1. 5 cm
  2. 10 cm
  3. 15 cm
  4. 20 cm

Correct Answer: 20 cm

Exam Year: 2020

Solution: 

Diameter = 2 * radius = 2 * 10 cm = 20 cm.

A circle has a radius of 10 cm. What is the diameter? (2020)

Practice Questions

Q1
A circle has a radius of 10 cm. What is the diameter? (2020)
  1. 5 cm
  2. 10 cm
  3. 15 cm
  4. 20 cm

Questions & Step-by-Step Solutions

A circle has a radius of 10 cm. What is the diameter? (2020)
  • 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: Since the radius is given as 10 cm, we will use this value to find the diameter.
  • Step 4: Multiply the radius by 2: 2 * 10 cm.
  • Step 5: Calculate the result: 2 * 10 cm = 20 cm.
  • Step 6: Conclude that the diameter of the circle is 20 cm.
  • Circle Properties – Understanding the relationship between radius and diameter in a circle.
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