We will be happy to help you if you provide us with a question to answer :)
It is correct, the active form of the sentence is PLEASE SIT DOWN, because <em>“You are requested to be seated “</em>is an imperative sentence in the passive voice .
1. To earn money. 2. It is their nature hobbies 3. They want to tell the reader something. 4. They want to prove that they are good at writing.
Hope this helps!!
