what is the formula for calculating area of shaded part

Answer 1

We do not see your drawing.

Answer 2

i can not draw it here i wz just asking if there is any particular formula

Answer 3

There are different formulas for areas of circles, rectangles, triangles, etc.

Answer 4

The best way to include a picture is to upload the picture to an image server and post the link.
It is not always possible, but give it a try and teachers are likely to help you get it done if there are difficulties.