He has already asked this question.
It did not yield the sort of result he was looking for.
I’m still not entirely clear why Claudius needs to know this. The only explanation I can come up with is that if Claudius has a body to point to, he’ll have a much easier time pointing to it to justify sending Hamlet away.
It is also possible, though for some reason not likely, that Claudius wants to see Polonius’ body because he was his colleague or friend or something and he just wants to bid him goodbye.
But it is funny, this game of hide and seek.
Hamlet has no reason to hide the body (he’s not trying to pretend he didn’t do it) and Claudius has no reason to find it in a hurry.
And play this game, they must.