To find the circumference of a circle using the formula \( C = \pi d \), where \( d \) is the diameter, we can substitute the given values.
Given:
- Diameter (\( d \)) = 24 ft
- Pi (\( \pi \)) = 3.14
Now, substitute the values into the formula:
\[ C = \pi d = 3.14 \times 24 \]
Now, perform the multiplication:
\[ C = 3.14 \times 24 = 75.36 \]
So, the circumference \( C \) is:
\[ C = 75.36 , \text{ft} \]
Thus, \( C = 75.36 , \text{ft} \).