what is the circumference of a circle with a diameter od 3.75 kilometers? estimate the circumference to the hundredths place using 3.14 as pi

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

\[ C = \pi \times d \]

where \( C \) is the circumference and \( d \) is the diameter.

Given the diameter \( d = 3.75 \) kilometers and using \( \pi \approx 3.14 \):

\[ C = 3.14 \times 3.75 \]

Now, performing the multiplication:

\[ C = 3.14 \times 3.75 = 11.775 \]

To round this to the hundredths place, we get:

\[ C \approx 11.78 \]

So, the circumference of the circle is approximately 11.78 kilometers.