A pendulum clock is a timepiece that uses a swinging weight, called a pendulum, to keep time. Kayal bought a pendulum clock for her living room. The clock contains a small pendulum of length \(11\ cm\). The minute hand and hour hand of the clock are \(5 \ cm\) are \(3 \ cm\) long respectively.
Based on the given information, answer the following questions:
1. Find the area swept by the minute hand in 25 minutes.
2. Find the angle described by the hour hand in 25 minutes.
3. Find the area swept by the hour hand in \(1\) hour.
4. Find the area swept by the hour hand between 4 am and 7 am.