my imported dice from maya is not colliding with the floor but passing through it

i am a beginner and i am trying to create a ludo game. i modeled the dice in maya and imported to unity but whatever i do the dice just passes through the floor.
i tried creating component collidors, it doent work. i checked in the convex button, it doesnot work.
within my dice there are around 16 other dices that imported, i really have no idea and i m totally stuck.
please help me

Add a rigidbody and you should be fine :slight_smile:
You also need the colliders