大S

damn i cant post a drawing..there r 2 cubes, cube x and cube y and the length of the cube x is 12cm. A) find the volume of cube x. B) if cube y has a volume equal to 1/8 of the volume of cube x, find the length of its edge.

a rectangular block 16 cm long has two spare faces. A cube of volume 343 cubic centimetre is cut from the rectangular block. Find the volume of the remaining block. Help me pls^