The Radius of a circle can be interpreted as the full extent from the centre of that circle to any point that will be on the circumference of the circle. The radius of the circle can be signified as "R" and "r".
How to Find the Radius of a Circle?
Now, we will be discussing the procedure by which one can find the radius of a circle. Those steps are illustrated below-
● First of all, one should be learning all the formulas to find the radius of a circle.
● Then, understand the question and look for the information given in the question.
● Settle the values in the above-mentioned formulas and get the solution.
Formula of Radius of a Circle
There are three major formulas, through which one can get the radius of a circle.
Radius = Diameter/2
Radius = Circumference/ 2*3.14159
Radius = 3.14159 * r*r
Diameter of a Circle
A Diameter of a circle can be interpreted as the whole distance of a circle that touches the two horizons of the circle. In simple words, a diameter can also be characterised by the distance of the circle that is twice the radius of that circle.
Examples
A few examples on the radius of a circle are:
Example 1: If the Diameter of a circle is 49 cm, then what will be the radius of that circle?
Solution:
From the question,
Diameter= 49
Now, we have to get the formula having the Diameter.
Radius = Diameter/ 2
putting the values, we will get
Radius = 49 / 2
24.5
The radius of the circle, from the question, will be 24.5 cm.
Example 2: If the diameter of a circle is 150 cm, then what will be the radius of the circle?
Solution:
From the question,
Diameter= 150
Now, we have to get the formula having the diameter.
Radius = Diameter/ 2
Putting the values, we will get
Radius = 150 / 2
75
The radius of the circle, from the question, will be 75 cm.
Example 3: If the circumference of the circle is 20 cm, then what will be the radius of the circle?
Solution:
From the question,
Circumference ( C ) = 20 cm
Now, we have to get the formula having the circumference.
Radius = Circumference / 2* 3.14
Setting the values in the given formula, we will get
Radius = 20 / 2* 3.14
The solution after solving this sum will be the radius of the circle.
Maths Worksheets
Maths is known to be a complex subject in comparison to other subjects. For people who have complications in understanding the topic or the concepts of maths, for them, there is an introduction to maths worksheets.
There are numerous advantages that a learner gets through the maths worksheets. Anyone can have access to maths worksheets. Students from any grade can take the help of maths worksheets.
Advantages of Maths Worksheets
There are a lot of boons that a learner gets through the maths worksheets. We will be mentioning a few of them:
● Maths worksheets are very very crucial for the continual practice of maths problems, from any topic.
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