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Subjects>Math>Math & Arithmetic

What the formula for circumference when you have the radius?

Anonymous

∙ 13y ago

Updated: 10/25/2022

3.14 times the radius times 2

Wiki User

∙ 13y ago

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Q: What the formula for circumference when you have the radius?

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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

What is the formula to calculate circumference using radius?

Circumference = 2*pi*radius

What is the formula for finding the circumference with radius?

the circumference is two times the radius, or 2r. so if the radius was 3, the circumference would be 6. if the radius was 4, the circumference is 8.

How do you get the radius of a circle from the circumfrance?

To find the radius of a circle when given the circumference, you should start with the formula for circumference, which is this: circumference = 2*pi*radius To solve for the radius, you would the have to divide the circumference by 2*pi leaving you with a formula like this: radius = circumference/(2*pi) pi≈3.14159

What formula is used to find the circumference when you know the radius?

Circumference=2*pi*radius

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