To find the approximate circumference of a circle, you can use the formula:
\[ C = 2 \pi r \]
where \(C\) is the circumference and \(r\) is the radius of the circle.
Given that the radius \(r\) is 450, you would calculate the circumference as follows:
\[ C = 2 \pi (450) \]
This simplifies to:
\[ C \approx 2 \times 3.14 \times 450 \quad (\text{using } \pi \approx 3.14) \]
Calculating that:
\[ C \approx 2 \times 3.14 \times 450 \approx 3.14 \times 900 \approx 2826 \]
So, the approximate circumference of a circle with a radius of 450 is about 2826 units.
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