Circumference of a Circle
c=2 x pi x r OR pi x D
The circumference of a circle is the distance around the outside of a circle. It can be calculated using the formula:
C = 2πr
where C is the circumference, π (pi) is a constant approximately equal to 3.14, and r is the radius of the circle.
Alternatively, the circumference can also be calculated using the diameter of the circle:
C = πd
where d is the diameter of the circle.
To use these formulas, simply substitute the value of the radius or diameter into the appropriate formula and simplify using the order of operations (parentheses, exponents, multiplication/division from left to right, and addition/subtraction from left to right).
It is important to note that the units used for the radius or diameter must be the same as the units used for the circumference, or the result will be incorrect.
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