To solve the problem in the image:

The formula for the circumference $C$ of a circle is:

$C = \pi \cdot d$

Where:

• $\pi \approx 3.14$ (as stated in the question),
• $d = 14 \, \text{m}$ (the diameter given in the question).

Substitute $\pi$ and $d$ into the formula:

$C = 3.14 \cdot 14$

Perform the multiplication:

$C = 43.96 \, \text{m}$

Final Answer:

The circumference of the circle is 43.96 meters.

Would you like more explanation or details on the formula used?

Here are 5 related questions for further exploration:

1. What is the relationship between the diameter and radius of a circle?
2. How would the circumference change if the diameter were doubled?
3. How is the area of a circle calculated, and what is its formula?
4. Why is $\pi$ always used when calculating properties of circles?
5. Can you derive the circumference formula using the radius instead of the diameter?

Tip: Always use the formula $C = 2 \pi r$ if the radius, instead of diameter, is given!