Please help me with 15 and 16.

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?

Ineed me i stuck and i don’t want to get it wrong

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels