Circumference = 2*pi*radius So the radius = circumference/2*pi
If you are given the radius of the circle, you can use the formula: diameter = 2*radius If you are given the circumference of the circle, you can use the formula: diameter = circumference/pi
The circumference of a circle is two times pi times the radius.
Well, isn't that a happy little question! To find the radius of a circle when you know the circumference, you can use the formula: radius = circumference / (2 * π). So, if the circumference is 75.36, you can plug that into the formula and find the radius. Just remember, there are no mistakes, just happy little accidents in math!
The circumference is 2*pi*radius (not raduis) and this formula is applicable whether the radius is an integer, a fraction, or even an irrational number.
The circumference of a circle with a known radius and can calculated using the following formula: C = 2Π(r)
Circumference = 2*pi*radius So the radius = circumference/2*pi
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
The formula for circumference is pi times diameter. Since a radius is always half the diameter, you just multiply it by 2 and then by pi.
Circumference = 2*pi*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.
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
Circumference=2*pi*radius
To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi
The circumference of a circle with a radius of 6.74 inches is approximately 42.34 inches. The circumference of a circle is found using the circumference formula: Circumference = 2 * π * radius So, all you have to do is plug in the radius into the formula, and approximate π to be 3.14159.
The first step is to work out the radius. The formula for area is pi(r2). That equals 379.94, so plug this into the equation and you get a radius of 10.997. The formula for the circumference is pi(2r). Plug the now known radius in and you get 69.097516968554117299881726353374 Therefore the circumference, if the area is 379.94cm2, will be 69.1cm
Divide the circumference by 2*pi because 2*pi*radius = circumference