To find the circumference of a circle, you can use the formula:
\[ C = 2\pi r \]
where \( C \) is the circumference and \( r \) is the radius. Given that the radius \( r \) is 4.5 centimeters, you can substitute that into the formula:
\[ C = 2\pi \times 4.5 \]
Calculating this gives us:
\[ C \approx 2 \times 3.14 \times 4.5 \approx 6.28 \times 4.5 \approx 28.26 \text{ cm} \]
So, the measurement closest to the circumference of the circle is:
B. 28.26 cm