Which of the following uses the correct formula to find the approximate circumference of a circle that has a radius of 450?(1 point)

Question

Responses

C≈3.14⋅450^2
upper C approximately equals 3.14 times 450 squared

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≈2⋅3.14⋅450

Answer 1

The correct formula to find the approximate circumference \( C \) of a circle is given by the formula:

\[ C \approx 2 \cdot \pi \cdot r \]

where \( r \) is the radius. If we use \( \pi \approx 3.14 \), the formula becomes:

\[ C \approx 2 \cdot 3.14 \cdot r \]

For a radius of 450, the formula would be:

\[ C \approx 2 \cdot 3.14 \cdot 450 \]

Therefore, the correct response from the options provided is:

C ≈ 2⋅3.14⋅450