Let's assume it's equal to 14 cm. Use our circumference calculator to find the radius when you only have the circumference or area of a circle. FAQ How to find the circumference of a circle? To calculate the circumference, you need the radius of the circle : Multiply the radius by 2 to get the diameter. That's it; you found the circumference of the circle.
The result is the circle's circumference. What is the circumference of a circle? Who calculated the circumference of the earth first? How do I find the diameter from the circumference? And that's it; you have the circle's diameter. How to find the area of a circle from the circumference? Divide the result by 2 to get the circle's radius. Multiply the radius by itself to get its square.
You found the circle's area from the circumference. How do I find the radius from the circumference? The result is the circle's diameter.
Divide the diameter by 2. There you go, you found the circle's radius. How to measure the circumference? Wrap a string around the object and measure the length of it. Use Omni's circumference calculator. Example 2: The circumference of a wheel is cm. Find its radius and diameter. Let the radius of the circle be R. Therefore, the radius is 70cm, and the diameter is cm. Example 3: The perimeter of a rectangular wire is m. The same wire is bent into the shape of a circle.
Find the radius of the circle formed using the circumference formula. Therefore the Radius is 42m. Example 4: Tom runs three rounds at a circular stadium field every day before starting his cricket practice. The diameter of the field is 28 m. How much does he run around the field every day?
Since Tom runs around the circular field, we need to find the circumference of the field. Hence, the circumference of the field is 88 m. We know that Tom runs around the field thrice. Hence, we multiply the circumference by 3. Therefore, Tom runs meters.
The circumference of a circle is a linear quantity that has the same units of length. The circumference of a circle is calculated with the help of a circumference formula that needs the value of the radius and Pi. The circumference of a circle can be easily found from the area of the circle.
Circumference, diameter and radii are measured in linear units, such as inches and centimeters. A circle has many different radii and many different diameters, each passing through the center. A real-life example of a radius is the spoke of a bicycle wheel. A 9-inch pizza is an example of a diameter: when one makes the first cut to slice a round pizza pie in half, this cut is the diameter of the pizza. So a 9-inch pizza has a 9-inch diameter.
Let's look at some examples of finding the circumference. Summary: The number is the ratio of the circumference of a circle to its diameter. The value of is approximately 3. The diameter of a circle is twice the radius. Given the diameter or radius of a circle, we can find the circumference. We can also find the diameter and radius of a circle given the circumference. The formulas for diameter and circumference are listed below. We round to 3.
By signing up, you agree to receive useful information and to our privacy policy. Finding the precise circumference requires a good head for math or a pencil and paper.
Measure the mid-point of a circle to the outer edge--a straight line that equals half the diameter of the circle. The diameter, of course, is the distance from one edge of a circle to its opposite edge across the widest point. Multiply the radius by 2 and then multiply that by Pi, which is 3.
A shortcut for an approximate circumference is to multiply the radius by 2 and then by 3. Benna Crawford has been a journalist and New York-based writer since Crawford has a degree in theater, is a certified Prana Yoga instructor, and writes about fitness, performing and decorative arts, culture, sports, business and education.
How to Figure the Diameter of a Circle.
0コメント