The formula for the surface area of a cube is: SA= 6((length of side)^2). So if the surface area is 96, first divide by 6. And you get 16. Next you find the square-root of 16 and get 4. So the length of each side is 4 inches. The formula for volume of a cube is V=(length of side)^3. So 4 raised to the third power is: 4*4*4. The volume of the cube is 64 inches cubed.