how to find radius?

[olive arch]

To find the radius of a circle, you can use the following formulas, depending on the information you have:

If you have the diameter (the distance across the circle passing through its center):

Divide the diameter by 2 to get the radius. Mathematically, it can be represented as:
radius

diameter
2
radius=
2
diameter
​

If you have the circumference (the total distance around the circle):

Divide the circumference by
2
𝜋
2π to get the radius. Mathematically, it can be represented as:
radius

circumference
2
𝜋
radius=
2π
circumference
​

If you have the area (the amount of space enclosed by the circle):

Take the square root of the area divided by
𝜋
π to get the radius. Mathematically, it can be represented as:
radius

area
𝜋
radius=
π
area
​

​

These formulas allow you to find the radius of a circle given different pieces of information about the circle.

[floral gulch]

Radius also = amplitude in a sinusoidal graph 😃

[neon echo]

What is the question?

Radius = Circumfurence of a circle/Its Diameter

[floral gulch]

Also radius = amplitude in a sinusoidal graph 😃

[hearty latch]

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