Circumference of Circle
a and b are the two bases
The circumference of a circle is the distance around the outside edge, or perimeter, of the circle. It is calculated by using the formula C = 2πr, where C represents the circumference, π (pi) is a mathematical constant approximately equal to 3.14, and r represents the radius of the circle.
To calculate the circumference of a circle, simply multiply 2π by the radius of the circle. For example, if a circle has a radius of 5 cm, the equation would be C = 2π(5) or C = 10π. Using a calculator, the approximate value of the circumference would be 31.4 cm (since π is an irrational number with an unlimited number of decimal places).
It is important to note that the circumference of a circle is directly proportional to its diameter, meaning that the circumference is always approximately 3.14 times the diameter of the circle. Therefore, another way to calculate the circumference of a circle is to use the formula C = πd, where d represents the diameter of the circle.
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