Question

If the radius is 1/4 inch, then what is the circumference of the circle rounded to the nearest tenths place

Answer 1

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 that value into the formula:

\[
C = 2\pi \left(\frac{1}{4}\right)
\]

This simplifies to:

\[
C = \frac{2\pi}{4} = \frac{\pi}{2}
\]

Now, using an approximation for \( \pi \) (approximately 3.14), we can calculate the circumference:

\[
C \approx \frac{3.14}{2} \approx 1.57
\]

Now, rounding \( 1.57 \) to the nearest tenths place gives:

\[
1.6
\]

Thus, the circumference of the circle rounded to the nearest tenths place is **1.6 inches**.