Moreover, to estimate the wood in a tree, measuring its circumference is easier and quicker than directly measuring the diameter. Sometimes to pick the right size of an object, we should know the distance around something, for instance, to find the right wheel for your vehicle. Radius = D / 2 Question: Do we use circumference in regular or everyday life?Īnswer: Yes, look around, and you will see trillions of real-life examples of circles and applications of circumference. Here is how:įormula of diameter of circle = D = 2 x radius Therefore, you can easily calculate the radius of a circle through its diameter. Question: How do you drive the radius formula from the diameter of the circle?Īnswer: The diameter splits the circle in half, and as you know, the radius of the circle is half of the diameter. Set up the formula of the area of a circle before solving a question.
#Dfind radius of circle with area how to
In this section, you will learn how to calculate the radius of a circle by using the following formulas and practice examples in all possible four ways. Methods to Calculate the Radius of a Circle Radius = r = C / 2 π or Circumference / 2 π units.This is how you can express the radius formula using the circumference of the circle’s formula: Here is how:Ī circle’s circumference is known as its perimeter or boundary. With the diameter of a circle, you can easily find out the radius of the circle. The longest chord or a line segment twice the length of the radius is known as the diameter of a circle. Therefore, the radius formula using the area of a circle would be expressed as: The area is the total space occupied by the circle, and the radius can be calculated using its formula. Below we have mentioned the radius formulas: 1.
You can calculate the radius of the circle by using some specific formulas. Following is the circle’s circumference formulaĬircumference = C = 2 x r x π Radius Formulas
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