The formula for the perimeter of a circle is ____?
- 2πr
- πr²
- πr/2
- None of these
Explanation
The perimeter of a circle, also known as its circumference, is the distance around the circle.
The formula for the circumference of a circle is given by 2πr, where r is the radius of the circle.
This formula is derived from the fact that the circumference is proportional to the diameter (2r) of the circle, with π being the constant of proportionality.
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