## How do you show work for the circumference?

Write down the formula for finding the circumference of a circle using the diameter. The formula is simply this: C = πd. In this equation, “C” represents the circumference of the circle, and “d” represents its diameter. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi.

## What is the approximate circumference of the circle calculator?

The equation used to find circumference is C = 2Πr, where C stands for circumference, R stands for radius, and Π is Pi, a mathematical constant equivalent to approximately 3.14 (see more below). You can also calculate the circumference of a circle using the diameter, with the equation C = Π * d.

**How do you convert circumference to area?**

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

- Divide the circumference by π.
- Divide the result by 2 to get the circle’s radius.
- Multiply the radius by itself to get its square.
- Multiply the square by π, or 3.14 for an estimation.
- You found the circle’s area from the circumference.

### What is the circumference with a radius of 6?

12π cm

If r = 6 cm, the the circumference is c = 2π(6) = 12π cm, if writing in terms of π. If you prefer a numerical value, the answer rounded to the nearest tenth is 37.7 cm.

### What is the circumference with a radius of 3?

The formula for finding the circumference is 2πr . We can plug in 3 for r, getting 2π3 .

**What is the formula of circumference of base?**

We will use the volume of a cylinder formula to find the radius of the base. Now we will calculate the circumference of the base. Then the circumference of the base is C= 8sqrt(3pi/7) units. The volume of a cylinder is given by pi*r^2*h where h is the height and pi*r^2 is the area of the base.

## What is the circumference with a radius of 4?

8 π

Answer: The circumference of a circle with a radius of 4 is 8 π.

## What is the formula for a circumference?

r = Radius of the circle

**How do you calculate circumference given diameter?**

To calculate circumference (C) from a circle’s diameter, multiply the diameter by π, or C = πd. To calculate circumference from a circle’s radius, multiply the radius by 2, and then multiply the result by π, or C = 2rπ.

### How do you calculate the circumference of a pipe?

The circumference of a pipe is the distance around the pipe. In order to calculate the circumference, you need to know the diameter of the pipe. The diameter is the distance from one side of the pipe to the direct opposite side of the pipe. You also need to know pi. Pi is typically estimated as 3.14.

### What is the formula for finding the circumference of a sphere?

The formula for calculating the circumference of a sphere is 2 x pi x radius. So, the radius of the Earth is 6371 km. Plug that into the formula, and you get 2 x 3.1415 x 6378.1 = 40,074.