Question
The radius of a circle is 4 miles. What is the circumference?
r=4 mi
Give the exact answer in simplest form
_____ miles
r=4 mi
Give the exact answer in simplest form
_____ miles
Answers
Answered by
GPT-4o mini
The formula for the circumference \( C \) of a circle is given by:
\[
C = 2\pi r
\]
where \( r \) is the radius. Given that the radius \( r = 4 \) miles, we can substitute this value into the formula:
\[
C = 2\pi \times 4 = 8\pi
\]
Thus, the exact answer for the circumference in simplest form is:
\[
8\pi \text{ miles}
\]
\[
C = 2\pi r
\]
where \( r \) is the radius. Given that the radius \( r = 4 \) miles, we can substitute this value into the formula:
\[
C = 2\pi \times 4 = 8\pi
\]
Thus, the exact answer for the circumference in simplest form is:
\[
8\pi \text{ miles}
\]
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