# What is a circumference?

The circumference is the distance around a closed curve. It is
used to mean the *perimeter of a circle*.

The circumference is the distance around a closed curve (i.e. a circle).

### How do you determine the circumference of a circle if you know the radius?

use the formula pi*diameter = circumference and the formula diameter = 2*radius and combine them 2pi*radius = circumference now you have a formula that you can just plug you numbers into. if you have 3 as your radius, then this is how to find the circumference 2pi*3=circumference 6.28*3=circumference 18.84=circumference

### How do you find circle a has a circumference of 24 m circle b has a radius of 5 m which circle has the greater circumference?

Circumference of circle B = 2*pi*r = 31.4 metres so B has the greater circumference. Circumference of circle B = 2*pi*r = 31.4 metres so B has the greater circumference. Circumference of circle B = 2*pi*r = 31.4 metres so B has the greater circumference. Circumference of circle B = 2*pi*r = 31.4 metres so B has the greater circumference.

### What is the circumference of a triangle?

triangle does not have a circumference, a circle has a circumference. A triangle only has a hypotenuse (Pythagoras sort of stuff). The circumference of a circle is the perimeter of it, so, perhaps, if your teacher ask for the circumference of a triangle he/she might mean the perimeter of the triangle.

### How do you get a circumference and diameter with pi?

Pi represents the ratio of the circumference of a circle to its diameter. If you know the diameter (D), then the circumference (c) is (D) *pi. If you know the circumference (C), then the diameter (D) is (C)/pi. circumference is 2PiR R is the radius. so 2R is twice the radius (a.k.a. The Diameter) That leaves you with Circumference=Diameter*Pi The circumference can be found by multiplying the diameter by pi, and the diameter can be…

### How do you convert circumference into diameter?

To Find Diameter: Multiply circumference by 0.3183, or divide circumference by 3.1416 Other things to do with circles: To find Circumference: Multiply diameter by 3.1416, or divide diameter by 0.3183 To Find Radius: Divide diameter by 2, or multiply circumference by 0.15915, or divide circumference by 6.28318