Best Answer

Divide the circumference by (2*pi)

Q: How do you find the radius of a circle when only given the circumference?

Write your answer...

Submit

Still have questions?

Continue Learning about Geometry

Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius squared

Circumference of a circle = 2*pi*radius = 8*pi or 25.13274123 units

If you know the circumference of a circle, you can find the radius by dividing the circumference by the value of Pi (3.14159...)

Measure the distance from the centre of the circle to its circumference.

The radius of a circle is the distance from the center to any point on the circle. The area is the space within the circle. The formula to find the area is πr2. r stands for the radius of the circle. If you want to find the radius, you can work backwards from the area or the circumference, which is the perimeter of the circle. The formula for circumference is 2πr.

Related questions

circumference of a circle = 2*pi*radius or pi*diameter

If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.

If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)

Diameter of a circle = 2*radius Circumference of a circle = 2*radius*pi

To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi

Circumference of a circle: 2 x pi x radius.

Divide the circumference by the value of Pi, then halve that result.

find the radius of a circle with circumference of 42.1

That will depend on the length of the radius which has not been given but in general the circumference of a circle = 2*pi*radius or diameter*pi

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

Square root (Area/pi) to get the radius Then 2xRadiusxPi= Circumference

You multiply the radius by 2. Then you multiply the product by pi (3.14)