Free points if you are in need

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?

What term best describes a line and a point that lie in the same plane? a. congruent b. coplanar c. collinear d. equal

What is not true about kl and mn? what is mn? (show your work)