Which of the following uses the correct formula to find the approximate circumference of a circle that has a radius of 450?(1 point)
Responses
C≈3.14⋅150
upper C approximately equals 3.14 times 150
C≈3.14⋅450÷2
upper C approximately equals 3.14 times 450 divided by 2
C≈3.14⋅450^2
upper C approximately equals 3.14 times 450 squared
C≈2⋅3.14⋅450
1 answer
To calculate the circumference of a circle, the correct formula is:
\[ C = 2\pi r \]
where \( r \) is the radius. Approximating \( \pi \) as \( 3.14 \), the formula becomes:
\[ C \approx 2 \times 3.14 \times r \]
Given a radius of 450, the formula for circumference would be:
\[ C \approx 2 \times 3.14 \times 450 \]
Therefore, the correct response is:
C ≈ 2⋅3.14⋅450
