To calculate the circumference of the circle given in the problem:

The formula for the circumference of a circle is:

$C = \pi \times d$

Where:

• $d$ is the diameter of the circle.

Given:

$d = 12 \, \text{cm}, \, \pi = 3.14$

Substitute the values into the formula:

$C = 3.14 \times 12 = 37.68 \, \text{cm}$

Final Answer:

The circumference of the circle is 37.68 cm.

Let me know if you want a detailed explanation of the steps!

Here are some related questions for you to explore:

1. What is the relationship between the radius and the diameter of a circle?
2. How would the circumference change if the diameter was doubled?
3. What is the formula for the area of a circle, and how is it related to the diameter?
4. How can you calculate the radius if only the circumference is given?
5. Why is $\pi$ an important constant in circles, and how is it defined?

Tip: Remember, the diameter of a circle is always twice the radius!