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The circumference also doubles.

Q: What will happen if the diameter of the circle doubles how will the circumference change?

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

It quadruples.

The circumference also doubles.

Doubling the radius doubles the circumference.

It will make the circumference of the circle bigger or smaller

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Circumference and diameter are directly proportional. Doubling one doubles the other, and the same applies for any multiplier.

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

It quadruples.

The circumference also doubles.

Doubling the radius doubles the circumference.

When you double the diameter, the circumference is also doubled.

Since the equation for circumference is pi*d then if you double the diameter the circumference will be doubled.

It will make the circumference of the circle bigger or smaller

If the diameter of a circle is 69mm then the circumference is: 216.8mm (diameter x pi = circumference).

Diameter of a circle = circumference/pi

Diameter of a circle = circumference/pi

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