Maths

These are the areas of Maths that I am confident at:

1. Fractions ( Add, Sub Multiplication and Divide)
2. Basic Facts
3. Working Form(Add, Sub Multiplication and Divide)
4. Area and Perimeter
5. Reading graphs and drawing graphs
The 2 things I need work on are

1.Pi 
2.Ratios

Can you please help??????????