Question

change the voice*he does not know me ​

Answer 1

Answer:

I am not known by him

Explanation:

1. because passive voice is starts from object and specially V3 is used.
2. This sentence is of simple present tense so, sentence structure will be:object + not + V3 + subject

Answer 2

Answer:

I am not known to him

Explanation:

passive: object + be verb + not + v3 + by + subject

In my answer there is not "by" there is "to" because KNOW is a accept by .