Let's choose a value for \( x \) that is greater than 5 and less than 15. For this example, we can select \( x = 10 \).
Assuming the pin is circular (as it often is when referring to 'pins'), we can calculate the perimeter (circumference) of a circle using the formula:
\[ C = 2\pi r \]
Where \( r \) is the radius. If we define the radius \( r \) to be equal to our chosen value \( x \), then:
\[ r = 10 \]
Now we can evaluate the circumference:
\[ C = 2\pi(10) = 20\pi \]
If we approximately calculate this value using \( \pi \approx 3.14 \):
\[ C \approx 20 \times 3.14 = 62.8 \]
Thus, for \( x = 10 \), the perimeter (circumference) of the pin is approximately \( 62.8 \) units. If the pin shape is different or if other expressions were intended, please clarify for additional calculations!