HELP ASAP DUE AT 7;30!

Cindy uses 1-inch cubes to find the volume of a jewelry box shaped like a rectangular prism. she uses 780 cubes to completely fill the jewelry box with no gaps or overlaps. if the jewelry box is 13 inches long and 5 inches wide, how tall is cindy’s jewelry box?

These question are hard can you me with answers

He concluded that a heavier object dropped from the same height as a lighter object will land