To find the circumference \( C \) of a circle using the formula \( C = \pi d \), we need to first calculate the diameter \( d \) from the radius. The diameter is twice the radius:
\[ d = 2 \times r \]
Given that the radius \( r = 97 , \text{m} \):
\[ d = 2 \times 97 = 194 , \text{m} \]
Now, we plug the diameter into the circumference formula:
\[ C = \pi d = \pi \times 194 \]
Using \( \pi \approx 3.14 \):
\[ C \approx 3.14 \times 194 \approx 608.26 \]
Rounding to the nearest whole number, we get:
\[ C \approx 608 , \text{m} \]
Looking at the provided choices, the closest option is:
609 m
1 answer