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Yes it does. By a factor of 4.

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The circumference is also halved.

Q: What happens to the circumference if the diameter is halved?

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The diameter of a circle is doubled if the circumference is doubled.

It will also be halved as circumference = 2Ï€r

As circumference = π x diameter and π is constant (≈ 3.14159), doubling the diameter will double the circumference.

If you double the circumference. the diameter like wise would double.

The circumference of a circle divided by its diameter is equal to the value of pi

The circumference is also quadrupled.

The circumference also doubles.

The circumference is tripled.C=pi*d, so pi*(3d) = 3C, where d is diameter and C is circumference.

It quadruples.

The circumference is doubled or tripled, respectively.

If the radius of a circle doubles, the circumference doubles, and so does the diameter.

its diameter is lower by the square root of 2 which is 1414 times smaller