Question

write an application to the principal of your school requesting him to grant you five days leave to attend your brother's marriage.(In simple way)

Answer 1

To,
The principal
[name of your school]
Date-3 march 2019
Subject - An application to grant five days leave
Respected sir/madam,

I want to state that I (your name) of class ( your class ) of your school wants five days leave from (dates for which you want leave)
due to my brother’s marriage.

So , kindly grant me leave for the above mentioned dates. I would be highly grateful to you.

Thanking you
Yours obediently
(Your name)

Answer 2

hey mate your answer↓

the main body of this type of letter should be formal. we should make it compact without using the informal word.