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To find the area of a circle from the circumference, follow these steps: 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.
To calculate the circumference of a circle, use the formula C= pi*D where C is the circumference, D is the diameter and pi is 3.14. If you have the radius instead of the diameter, multiply it by two to get the diameter.
Use this calculator to easily calculate the circumference of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc. If you know the diameter, first divide it by two to get the radius.
You can find the circumference of any circle simply by using the circumference of a circle formula: C=πd (where d is the length of the diameter of the circle). In other words, circumference equals pi times diameter.
In this article, we will discuss the “ Circumference of a circle ” or “Perimeter of circle” with its definition, formula, methods to find the circle’s circumference with many solved examples.
There are two ways to get the circumference of a circle. The first method uses a radius of the circle, while the second one involves the diameter to calculate the circumference. But, it is important to know that both give the same result. When the radius of a circle is known, the formula to determine the circumference is given below:
Examples of Finding the Circumference of a Circle. Example 1: Find the circumference of a circle whose radius is [latex]3[/latex] feet. Use [latex]\pi = 3.1416[/latex]. Round your answer to the nearest hundredth. We can easily substitute the value of radius value into the formula because it is clearly given to us.