# How do you find the radius If the circumference is given?

## How do you find the radius If the circumference is given?

To find the radius from the circumference of a circle, you have to do the following:

1. Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter.
2. Divide the diameter by 2.
3. There you go, you found the circle’s radius.

What is the radius of the circumference is 6?

Rounded to 0.95 units.

What is the circumference of R 5?

A circle with a radius of 5 units has a circumference of 31.416 units.

### What is the radius of 8?

Since the diameter is 8 inches, then we can do 82 to find the radius, or 4 inches.

What is the circumference if radius is 5cm?

Explanation: The formula for the circumference of a circle is 2πr so all we have to do is plug in 5 for our radius: 2π(5) which can be simplified to 10π .

What is the diameter of 8 inch circumference?

25.12 inches
We can see that the diameter of the circle is 8 inches. Let’s put this number into the formula. The circumference of a circle that has a diameter of 8 inches is 25.12 inches.

## What is difference between radius and circumference?

The radius of a circle denoted by r is the distance of the line from the centre of the circle to the outer edge, and the circumference of a circle is the perimeter of the circle that means a measure of the outer round length of the circle.

What is a diameter of a circle?

How to find the radius from the circumference of a circle?

To find the radius from the circumference of a circle, you have to do the following: Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter. Divide the diameter by 2. There you go, you found the circle’s radius.

### What is the circumference of a 12 inch circle?

What is the circumference of a 12 inch diameter circle? The circumference of a 12 inch circle is 37.70 inches. Using the formula C = πd where d is the diameter, we have. Circumference = πd = 3.14 x 12 = 37.70. Diameter.

How do you find the radius of a surface area?

Sphere surface area to radius calculator. User Guide. This tool will calculate the radius of a circle from the circumference, and will convert different measurement units for circumference and radius. Formula. The formula used to calculate the circle radius is: r = C / (2 · π) Symbols. r = Circle radius. C = Circle circumference.

What is the proportion between radius and diameter?

Circumference to diameter. You have probably noticed that, since diameter is twice the radius, the proportion between the circumference and the diameter is equal to π: C/D = 2πR / 2R = π. This proportion (circumference to diameter) is the definition of the constant pi. It is used in many areas, such as physics and mathematics.