# Calculate perimeter of segment of circle

## ( Equivalent to: circumference of segment 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 Segment Of Circle

*Example: What is the perimeter of segment of circle with radius = 21 units and angle = 55 units?*

As;

perimeter of segment of circle = (π*radius*angle/180+2*radius*Math.sin(angle/720)

By substituting the above given data in the previous function;

(i.e.) = (π*21*55/180+2*21*Math.sin(55/720)

Answer is: units.

*Practice Question: Calculate perimeter of segment 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 = 2 units and angle = 40 units

( ii ) radius = 25 units and angle = 33 units

( iii ) radius = 24 units and angle = 45 units