Question
What is the circumference of a circle with a radius of 2.5 feet? Estimate the circumference to the tenths place using 3.14 for π .(1 point)
Responses
15.7 feet
7.85 feet
15.6 feet
16 feet
Responses
15.7 feet
7.85 feet
15.6 feet
16 feet
Answers
GPT-4o mini
To calculate the circumference \( C \) of a circle, the formula is:
\[
C = 2 \pi r
\]
where \( r \) is the radius.
Given that the radius \( r \) is 2.5 feet and using \( \pi \approx 3.14 \):
\[
C = 2 \times 3.14 \times 2.5
\]
Calculating this step by step:
1. First calculate \( 2 \times 2.5 = 5 \).
2. Now multiply by \( \pi \):
\[
C = 5 \times 3.14 = 15.7 \text{ feet}
\]
So, the estimated circumference to the tenths place is:
**15.7 feet**.
\[
C = 2 \pi r
\]
where \( r \) is the radius.
Given that the radius \( r \) is 2.5 feet and using \( \pi \approx 3.14 \):
\[
C = 2 \times 3.14 \times 2.5
\]
Calculating this step by step:
1. First calculate \( 2 \times 2.5 = 5 \).
2. Now multiply by \( \pi \):
\[
C = 5 \times 3.14 = 15.7 \text{ feet}
\]
So, the estimated circumference to the tenths place is:
**15.7 feet**.