Question

we know that this was invented by a famous scientist(voice change)

Answer 1

Question :

We know that this was invented by a famous scientist.

( Change the voice )

Answer :

It is known to us that a famous scientist invented this.

The first phrase "We know that"; it is in active voice. After changing the voice, it turns into Passive voice "It is known to us".

The second phrase "this was invented by a famous scientist"; it is in passive voice. After changing the voice, it turns into active voice "a famous scientist invented this".

#MarkAsBrainliest

Answer 2

hey mate here is ur ans ↓↓

※※※※※※※※※※※※※※※※※

It is known to us that a famous scientist invented this.

hope it helps u☺☺✌