what is the format of article writing?

format of diary entry 

pls give the brief summary of the canterville ghost .

What is componendo and dividendo method? Plz explain.

1. cos 20 cos40 cos 60 cos 80=1/16
   

cos20.cos40.cos80=1/8

summary of the last lesson

character sketch of the grandmother from the chapter the portrait of a lady

i want the summary of the canterville ghost

How to write a leave letter to class teacher reason for death of grandfather?