"I can break a brick with my hand" would be the normal way to say this.
You could also say "I can break a brick by using my hand", but that would be a relatively clumsy way of expressing it.
"I can break a brick with my hand" would be the normal way to say this.
You could also say "I can break a brick by using my hand", but that would be a relatively clumsy way of expressing it.