Q: What is the circumference of a 21-inch circle?

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The perimeter of a circle is its circumference

The perimeter of a circle is its circumference

The round perimeter of circle is its circumference

The distance around a circle is its circumference

The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.

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The circumference of a circle is the perimeter of the circle for a given diamater.

The perimeter of a circle is its circumference

Nobody is the circumference of a circle!

The perimeter of a circle is its circumference

The round perimeter of circle is its circumference

The distance around a circle is its circumference

The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.

The circumference of a 9 circle is: 28.3

The circumference of a 30 circle is: 94.25

An arc is a portion of the circumference of a circle.

If the diameter of a circle is 69mm then the circumference is: 216.8mm (diameter x pi = circumference).

Yes the distance around a circle is its circumference