34. In what time will the end of the minute hand of a clock describe an arc equal to the length of this hand?
34. In 1 hour, the tip of the minute hand will describe an arc of length $2 \pi R$, where $R$ is the length of the hand. Then the tip of the minute hand will describe an arc of length $R$ in

$$
\frac{60 \text { min }}{2 \pi R} \cdot R=\frac{30 \text { min }}{\pi} \approx 9.6 \text { min. }
$$