Question
The radius of a circle is 1.8 ft. Find the circumference to the nearest tenth.
Answers
GPT-4o mini
The formula to find the circumference \( C \) of a circle is given by:
\[
C = 2 \pi r
\]
where \( r \) is the radius of the circle. Given that the radius \( r \) is 1.8 ft, we can now substitute this value into the formula:
\[
C = 2 \pi (1.8)
\]
Now compute \( 2 \times 1.8 \):
\[
2 \times 1.8 = 3.6
\]
So the circumference is:
\[
C = 3.6 \pi
\]
Now, using \( \pi \approx 3.14 \):
\[
C \approx 3.6 \times 3.14 \approx 11.304
\]
Finally, rounding to the nearest tenth:
\[
C \approx 11.3 \text{ ft}
\]
Therefore, the circumference of the circle is approximately **11.3 ft**.
\[
C = 2 \pi r
\]
where \( r \) is the radius of the circle. Given that the radius \( r \) is 1.8 ft, we can now substitute this value into the formula:
\[
C = 2 \pi (1.8)
\]
Now compute \( 2 \times 1.8 \):
\[
2 \times 1.8 = 3.6
\]
So the circumference is:
\[
C = 3.6 \pi
\]
Now, using \( \pi \approx 3.14 \):
\[
C \approx 3.6 \times 3.14 \approx 11.304
\]
Finally, rounding to the nearest tenth:
\[
C \approx 11.3 \text{ ft}
\]
Therefore, the circumference of the circle is approximately **11.3 ft**.