anewer this. no link should be provided. I will mark brainlist who answers it.

To,
(Principal's Name)
(School Name),
(School Address).
Date –
Subject – Application For Leave
Dear (Principal's Name),
I am (Student Name), student of (Class and Section). I would like to kindly inform you that due to suffering from a common cold and fever, I have will unable to attend school for the next 3 days. I kindly request your permission to grant me leave from (start-date) to (end-date). I would appreciate it greatly.
Sincerely,
(Student Name)