Question

Question
What is the approximate circumference of a circle that has a radius of 63? Use 3.14 for π
and express your answer to the hundredths place.

Answer 1

To calculate the circumference of a circle, you can use the formula:

\[
C = 2\pi r
\]

where \(C\) is the circumference, \(\pi\) is approximately 3.14, and \(r\) is the radius of the circle.

Given that the radius \(r\) is 63, we can plug that into the formula:

\[
C = 2 \times 3.14 \times 63
\]

Calculating that step by step:

1. Calculate \(2 \times 3.14\):

\[
2 \times 3.14 = 6.28
\]

2. Now multiply that result by 63:

\[
6.28 \times 63
\]

Breaking this down:

\[
6.28 \times 63 = 6.28 \times (60 + 3) = (6.28 \times 60) + (6.28 \times 3)
\]

Calculating each part:

\[
6.28 \times 60 = 376.8
\]
\[
6.28 \times 3 = 18.84
\]

Now add those two results:

\[
376.8 + 18.84 = 395.64
\]

Therefore, the approximate circumference of the circle is:

\[
\boxed{395.64}
\]