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# If a circles radius is 2.5cm what is the diameter?

Updated: 9/18/2023

Wiki User

13y ago

The diameter of a circle is twice the radius.

Wiki User

13y ago

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Q: If a circles radius is 2.5cm what is the diameter?
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### Is the radius of a circle half of the circles diameter?

Yes, the radius is half the diameter. (Eg, if the DIAMETER is 6, the RADIUS would be 3).

### Radius is 3 cm what is diameter?

Since with circles the radius is half the diameter, the diameter would be 6 cm.

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The radius will be half the diameter of 8 inches which is 4 inches

### How do you find the area of a circles when you have the diameter?

Divide the diameter by 2 to get the radius then square the radius, and finally multiply by pie (3.14)

It is: 2 to 1

### Pi is the ratio of a circles circumfrance to its what?

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### What types of circles are there?

Radius, Diameter, Arc,Seicircle, Circumference and area.

### If a circle has radius that is 12 feet how long is the circles diameter?

Since radius is half of a diameter, therefore 12 x 2 = 24

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to find the circumfrence you do pi times diameter ( 50* approx 3.14) which gives you 157cm

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to calculate circumference you find a circles radius or diameter. you do diameter times pi or radius times 2 times pi. the you have circumference!