HELP PLESE I REALLY NEED YOUR HELP. AND PLEASE DON’T GIVE ME LINKS!!

For the first first you would divid 16 by 16 and that give you 256 and not your equations is h=256+128 add those together it’s gives you 384

For the second you want to bring you want to turn v^2=64 into v=64 squared than you find the square root of 64 and that is 8.
So 8v

Last one one I don’t really understand fully so can u explain it a little more