How to find a gameObject with in 3 meter.

Unity Engine
1

Dear friends,
How to find a gameObject with in 3 meter. Please help me.

Thanks

2 
Physics.CheckSphere(transform.position, 3.0);

or

if((targetGameObject.transform.position - transform.position).magnitude < 3.0) //inside!
3

thanks for you reply. how my player will find out the 3 meter away gameobject, there are many game objects.

4

Unity - Scripting API: Physics.SphereCastAll gives you all gameobjects with collider in the defined sphere. you can iterate through them and check for certain names, types, tags etc.