How do I destroy all enemy game objects with a bomb?

Hello, Im new to coding so bare with me. I want to destroy all enemy game objects that are in the blast radius of a bomb. The simpler the better. Thank you so much for helping!

Instatntiate a sphere gameobject at your bomb position, sphere must have rigidbody and collider and attach the script on this object, disable your mesh component.
Script contain

void OnTriggerEnter(Collider other)

In the Start() write some code which scale your gameObject from (0,0,0) to your desired scale(e.g 3,3,3) .

you can ask further if you have any query.

Use Physics.OverlapSphere