Circumference of a Circle ~ Maths Tricks and Tips

Here is the formula to calculate circumference of a circle

2 $π r OR$ $π d$

$Where r is the Radius of a Circle and d is the Diameter of a Circle...$

$For example : Let the Radius of a Circle be 5cm$

$So, Circumference of a circle = 2 x 3.141592 x 5$

$i.e., 31.41592 cm$

$Here is a Program to Calculate Circumference of a Circle...$

Enter the Radius of a Circle

Circumference of a Circle is

Note: Here π = 3.141592