A8. At the railway station, the minute hand is 45 cm long. Which of the following is the best approximation for the distance traveled by the tip of the minute hand in 1 hour and 45 minutes?
(A) $495 \mathrm{~cm}$
(B) $410 \mathrm{~cm}$
(C) $376 \mathrm{~cm}$
(D) $353 \mathrm{~cm}$
(E) $283 \mathrm{~cm}$
A8. The minute hand of a clock describes in $1 \mathrm{~h}$ and $45 \mathrm{~min}$ a path of 1.75 circumferences of a circle with a radius of $45 \mathrm{~cm}$, which amounts to $1.75 o=1.75 \cdot 2 \cdot \pi \cdot 45=494.55 \mathrm{~cm} \approx 495 \mathrm{~cm}$.