# What is the circumference of a 4 ft diameter circle?

Asked By: Moritz Bultermann | Last Updated: 14th April, 2020
Category: science space and astronomy
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Students learn that the circumference of a circle is the distance around the circle, and the formula for the circumference of a circle is 2 times pi times the radius of the circle. Pi is the ratio of the circumference to the radius, which is approximately 22/7 or 3.14.

Keeping this in consideration, what is the circumference of a 5 ft diameter circle?

Assuming the circle diameter is equal to 5 ft, then the circle circumference is equal to pi×diameter or 3.14159×5 ft = 15.70795 ft or approximately 15.7 ft.

Also Know, what is the circumference of 4? The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle. If a circle has a diameter of 4, its circumference is 3.14*4=12.56.

In this manner, what is the circumference of a 4 ft diameter?

3.14 x 4 = 12.56 ft.

What is the circumference of a 3 foot diameter circle?

If the radius of your circle is 3 feet, for example, its diameter is 3 × 2 = 6 feet; and the circumference is then 6 × 3.14 = 18.84 feet, or 6 × 3.1415 = 18.849 feet if you're asked for a more exact answer.

### What is the formula for circumference?

The circumference = π x the diameter of the circle (Pi multiplied by the diameter of the circle). Simply divide the circumference by π and you will have the length of the diameter. The diameter is just the radius times two, so divide the diameter by two and you will have the radius of the circle!

### What is the area of 5 feet?

In our example, 5 feet squared equals 25 square feet.

### What is radius of a circle?

The radius of a circle is the distance from the center of the circle to any point on its circumference.  The easiest way to find the radius is by dividing the diameter in half.

### How many inches is 5 feet diameter?

Foot to Inch Conversion Table
Foot [ft] Inch [in]
1 ft 12 in
2 ft 24 in
3 ft 36 in
5 ft 60 in

### What is the radius of a circle calculator?

Substitute this value to the formula for circumference: C = 2 * π * R = 2 * π * 14 = 87.9646 cm . You can also use it to find the area of a circle: A = π * R² = π * 14² = 615.752 cm² . Finally, you can find the diameter - it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm .

### What is the circumference of 5 in?

Circumference & Areas
Size in Inches Circumference Inches Area in Square Inches
5 15.710 25.000
5 1/4 16.490 27.560
5 1/2 17.280 30.250
5 3/4 18.060 33.060

### What is the circumference of a 20 foot diameter circle?

Circumference = 62.857 ft. Answer: the circumference of the circle having 20 ft diameter is 62.857 ft.

### How do I find diameter if I know circumference?

Solve the equation for the diameter of the circle, d= C/π. In this example, "d = 12 / 3.14." or "The diameter is equal to twelve divided by 3.14." Divide the circumference by pi to get the answer. In this case, the diameter would be 3.82 inches.

### What is the area of a 4 foot circle?

What is the area of a circle with a radius of 4 ft?

Area of a 4 Foot Circle.
50.265 square feet
4.6698 square meters
46,698 square centimeters

### What is the circumference of a 8 ft diameter circle?

The circumference of a circle that has a diameter of 8 inches is 25.12 inches.

### What is circumference calculator?

Circle Calculator. The circumference of a circle can be defined as the distance around the circle, or the length of a circuit along the circle. All of these values are related through the mathematical constant π, or pi, which is the ratio of a circle's circumference to its diameter, and is approximately 3.14159.

### What is the radius of a 20 foot circle?

Circumference of the circle - (44/7)*r = 20 ft. Radius of the circle = 7*20/44 = 3.1818 ft.

### What is the area of a 20 foot circle?

Area of a 20 Foot Circle
1,256.6 square feet
180,956 square inches
116.75 square meters
1,167,454 square centimeters

### How do you measure a circle?

Measuring the distance around the outside of a circle can be difficult, especially if you don't have a flexible measuring tape. It is often easier to measure the diameter and multiply by 3.14. The formula is: circumference = pi times the diameter. For most projects, 3.14 can be used as the value for pi.

### What is pi r2?

Pi r-squared is the formula for the area of a circle of radius r. The lowercase Greek letter pi (written ) stands for the ratio of circumference to diameter, which is the same for all circles because they all have the same shape.

### How do you find a diameter?

To calculate the diameter of a circle, multiply the radius by 2. If you don't have the radius, divide the circumference of the circle by π to get the diameter. If you don't have the radius or the circumference, divide the area of the circle by π and then find that number's square root to get the radius.