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15 December, 08:42

What happens to the circumference of a circle when the radius is quadrupled?

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Answers (2)
  1. 15 December, 08:43
    0
    He circumference of a circle is equal to the diameter times pi. So, let's look at what happens if you double the radius of a circle - - say from 2 to 4. The area will go from 12.56 to 50.24. This means that it has quadrupled.
  2. 15 December, 09:01
    0
    Circumference = 2 * PI * radius

    The circumference would also be quadrupled.

    There is a direct relationship between circumference and radius.
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