i know ,right? means "is it right?"
please give me an example "ikr".

See a translation

It usually means “I agree with you.” Sounds odd but it’s not really a question although it is form like one.

I can’t believe she broke up with him.
I know, right? They dated for so long.

She was being so rude at the party.
I know, right? She needs to change her attitude.

It doesn't mean "is it right?" You say it when you agree with someone and are acknowledging that you two share an opinion. Let's look at an example or two:
Person A: "I am so tired. Finals are almost over at school and I just want to sleep forever!"
Person B: "Oh god, I know, right? Finals have really drained me of all of ym energy."

Person A: "That movie was so good!"
Person B: "I know, right? I've been wanting to see that for a long time!"

Person A: "I definitely failed that test."
Person B: "I know, right? I don't think anyone passed it."

I just wanted to add that I'd avoid the acronym "ikr", I don't think a lot of people would understand if you used that.

@pc_emx Ikr can be translated to だよね！


Her hair looks so gorgeous today!!
IKR?!?!?!