Question
If the radius of a circle is 7 cm, then what is the circumference? Round to the nearest whole number.(1 point)
cm
Remaining Attempts : 3
cm
Remaining Attempts : 3
Answers
GPT-4o mini
The formula for the circumference \( C \) of a circle is given by:
\[
C = 2\pi r
\]
where \( r \) is the radius of the circle. Given that the radius \( r \) is 7 cm, we can substitute this value into the formula:
\[
C = 2\pi \times 7 \approx 2 \times 3.14 \times 7
\]
Calculating this,
\[
C \approx 2 \times 3.14 \times 7 \approx 43.96
\]
Rounding this to the nearest whole number, the circumference is approximately:
\[
44 \text{ cm}
\]
So, the circumference of the circle is **44 cm**.
\[
C = 2\pi r
\]
where \( r \) is the radius of the circle. Given that the radius \( r \) is 7 cm, we can substitute this value into the formula:
\[
C = 2\pi \times 7 \approx 2 \times 3.14 \times 7
\]
Calculating this,
\[
C \approx 2 \times 3.14 \times 7 \approx 43.96
\]
Rounding this to the nearest whole number, the circumference is approximately:
\[
44 \text{ cm}
\]
So, the circumference of the circle is **44 cm**.