Financial Accounting

I have an assignment of the subject Financial Accounting , first of all, I want an introduction of financial statement and financial ratio also conclusion.

You should to answer these questions:

What is financial statement?

What is the purpose of financial statement?

Why we need financial statement?

what financial statement tell us?

Also, 

What is the meaning of financial ratio?

what is the purpose of financial ratio?

why we use financial ratio?

Moreover,

I want to write the source of financial where as there is three type of source of finance 1) long term source 2) medium term source 3) short term source 

you should to mention three of each and what they mean and explain it 

 I want 1800  words minimum and this picture explain what I want