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# What happens to the circumference of a circle when the radius doubles?

Updated: 11/3/2022

Wiki User

14y ago

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

Wiki User

14y ago

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Q: What happens to the circumference of a circle when the radius doubles?
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### What happens to the circumference of a circle when the radius is doubles?

The circumference also doubles.

### What happens to the circumference of a circle if you double the radius?

The circumference also doubles.

### How is the circumference of a circle with radius 9 cm related to the circumference of a circle with diameter of 9cm?

Doubling the radius doubles the circumference.

### As the diameter of the circle increases what happens to the circumference?

The circumference of a circle increases with an increase in the radius as it is directly proportional its radius.

### What is the circumference of a circle when the radius doubles or trebles?

The circumference also doubles or trebles. The circumference is directly proportional to the radius, with the constant of proportionality = 2*pi.

It gets bigger.

It splits

### What happens to the circumference of a circle when the radius is increased by 50 percent?

The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.

### What is the circumference of circle with radius 12cm?

The circumference of circle with radius 12cm is 75.4cm

### What is the circumference of a circle if the radius is 29?

The circumference of a circle if the radius is 29 is about 182.21

### What is the circumference of a circle with a radius of eleven?

The circumference of a circle with a radius of 11 is: 69.12

### What is the circumference of a circle that has the radius of 3.2cm?

The circumference of a circle that has a radius of 3.2cm is: 20.1cm