A circle has a radius of 6 cm. What is its circumference?

To find the circumference of a circle, you can use the formula:

Circumference Formula

The formula is:

C = 2πr

where C is the circumference and r is the radius.

Given Values

In this case, the radius (r) is 6 cm.

Calculating the Circumference

Plugging the radius into the formula:

C = 2 × π × 6 cm

This simplifies to:

C = 12π cm

Final Answer

Using the approximate value of π (about 3.14), the circumference is:

C ≈ 12 × 3.14 ≈ 37.68 cm

Therefore, the circumference of the circle is approximately 37.68 cm.