Calculate perimeter of circle

( Equivalent to: circumference of circle )

In next fields, kindly type the dimensions of your shape in the text box under title [ Unknowns: ]. After you type your value, click "CALCULATE" button; the answer will be automatically calculated and displayed in the text box under title [ Answer: ]. Also, you will be able to animate your shape through buttons under the below figure.

How to Calculate Perimeter Of Circle

Example: What is the perimeter of circle with radius = 10 units?


perimeter of circle = 2*π*radius

By substituting the above given data in the previous function;

(i.e.) = 2*π*10

Answer is: units.

Practice Question: Calculate perimeter of circle for the following problems:

N.B.: After working out the answer of each of the next questions, click adjacent button of see the correct answer.

( i ) radius = 23 units

( ii ) radius = 11 units

( iii ) radius = 25 units

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