Answer :
I don't know the answer for 4, but here's the rest of them.
1) square root of 1044
2) square root of 12809
3) Yes, because it is square root of 369, which is approximmately 19.2
1) square root of 1044
2) square root of 12809
3) Yes, because it is square root of 369, which is approximmately 19.2