Multiple raycasting

is there any way to cast rays from area.
raycaster cast single ray from point. is there any way to cast multiple rays from circle.

Well, you would have to determine the origin points of the rays on your circle. This can be done by some sort of sampling. However, casting a huge amount of rays in order to simulate collision detection over an area/volume is error prone and not recommended. Bounding volumes perform much better in this regard.

My main objective is select faces around intersected face by raycasting.
At now, I can get only one face by raycasting. But I want to select faces around that face.

this might help you. creating a marker around the cursor will help you to detect neighbors’ faces.