Answer:1022Step-by-step explanation:Let's find the volume of the cube at the top of the solid.The formula is V = edge*37x7x7 = 343Since there is two identical cubes (top and bottom), you multiply the product by 2.343x2 = 686Now, let's find the volume of the middle cube.6x8x7 = 336Finally, let's add it all together.686+336 = 1022The volume of the solid is 1022.