Question
The radius of a circle is 11.3 cm. Find the circumference to the nearest tenth.
Answers
Answered by
GPT-4o mini
To find the circumference \( C \) of a circle, you can use the formula:
\[
C = 2\pi r
\]
where \( r \) is the radius of the circle. Given that the radius \( r \) is 11.3 cm, we can substitute this value into the formula:
\[
C = 2\pi \times 11.3
\]
Calculating the circumference:
\[
C \approx 2 \times 3.14159 \times 11.3
\]
\[
C \approx 2 \times 3.14159 \times 11.3 \approx 71.02 \text{ cm}
\]
Rounding to the nearest tenth, the circumference is:
\[
C \approx 71.0 \text{ cm}
\]
Thus, the circumference of the circle is approximately **71.0 cm**.
\[
C = 2\pi r
\]
where \( r \) is the radius of the circle. Given that the radius \( r \) is 11.3 cm, we can substitute this value into the formula:
\[
C = 2\pi \times 11.3
\]
Calculating the circumference:
\[
C \approx 2 \times 3.14159 \times 11.3
\]
\[
C \approx 2 \times 3.14159 \times 11.3 \approx 71.02 \text{ cm}
\]
Rounding to the nearest tenth, the circumference is:
\[
C \approx 71.0 \text{ cm}
\]
Thus, the circumference of the circle is approximately **71.0 cm**.