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In a circle, if the radius is 10 cm, what is the length of a diameter?

Practice Questions

Q1
In a circle, if the radius is 10 cm, what is the length of a diameter?
  1. 5 cm
  2. 10 cm
  3. 20 cm
  4. 15 cm

Questions & Step-by-Step Solutions

In a circle, if the radius is 10 cm, what is the length of a diameter?
  • Step 1: Understand that the radius of a circle is the distance from the center of the circle to any point on its edge.
  • Step 2: Know that the diameter of a circle is the distance across the circle, passing through the center. It is twice the length of the radius.
  • Step 3: Since the radius is given as 10 cm, we can find the diameter by using the formula: Diameter = 2 * radius.
  • Step 4: Substitute the value of the radius into the formula: Diameter = 2 * 10 cm.
  • Step 5: Calculate the result: Diameter = 20 cm.
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