Use of English with reference to official personal application

[Unregistered]

respected Sir/ madam

i shall feel much obliged if you kindly advice me about the acceptability of the block type format in the coposition of the official personal application ( leave of absence ) etc.Block type format means starting all paragrapfs from yhe extreme left hand margin of the paper.
Here we are insisted to use only the indented style.
Your kind advice is highly solicited.
with kind regards.

Yours faithfully

Sakti pada chakraborty.

[RonBee]

respected Sir/ madam

i shall feel much obliged if you kindly advise me about the acceptability of the block type format in the composition of the official personal application ( leave of absence ) etc.Block type format means starting all paragraphs from the extreme left hand margin of the paper.
Here we are required to use only the indented style.

Either is okay.

[Tdol]

Same in the UK.

[RonBee]

Plus, if it's the one you are required to use, why not use it?