Question
if a radius is 1/4 inch, then what is the circumference of the circle rounded to the nearest tenths place
Answers
GPT-4o mini
To find the circumference of a circle, you can use the formula:
\[
C = 2\pi r
\]
where \( C \) is the circumference and \( r \) is the radius. Given the radius \( r = \frac{1}{4} \) inch, we can plug in the value:
\[
C = 2\pi \left(\frac{1}{4}\right)
\]
This simplifies to:
\[
C = \frac{2\pi}{4} = \frac{\pi}{2}
\]
Now, we can approximate \( \pi \) as 3.14:
\[
C \approx \frac{3.14}{2} \approx 1.57
\]
Rounding 1.57 to the nearest tenths place gives:
\[
C \approx 1.6
\]
Therefore, the circumference of the circle is approximately **1.6 inches**.
\[
C = 2\pi r
\]
where \( C \) is the circumference and \( r \) is the radius. Given the radius \( r = \frac{1}{4} \) inch, we can plug in the value:
\[
C = 2\pi \left(\frac{1}{4}\right)
\]
This simplifies to:
\[
C = \frac{2\pi}{4} = \frac{\pi}{2}
\]
Now, we can approximate \( \pi \) as 3.14:
\[
C \approx \frac{3.14}{2} \approx 1.57
\]
Rounding 1.57 to the nearest tenths place gives:
\[
C \approx 1.6
\]
Therefore, the circumference of the circle is approximately **1.6 inches**.