Can you plz answer this ill give 10 pts no links and don't just say something that doesn't even make sense to what im asking

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

What is the size of the matrix resulting from

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?